Sexual Relationships 
Sexual Health 
A lot can be said about sexual technique, stamina, and pure athleticism of the man having sex with the woman, but as I've said previously sex is so much more psychological than physical. In this way, it's my belief that the number one killer of men's performance that makes sex with the guy so bad that the girl is actually the one to sleep with them and never call again is the ability to not stop thinking during sex.
This may be more true of guys on here than on average because cerebral types seem particularly at risk of this phenomenon. We've evolved past our feral roots and yet a feral man would probably ravage a woman in a way she'd never forget and hold onto for weeks if not months if not years. Meanwhile, the Thinking Man often gives the woman nothing to think about or much of an expereince at all. This is because in the bedroom thoughts are insecurities come to life. There is no other reason to think instead of feel while having sex except that you are insecure about something. This seems radical, but hopefully my explanation helps make sense of it.
Of course thinking "I'm going to suck she's going to hate it" is an insecurity--you wouldn't argue against that. But what about thinking "ok...I'm going to be a stud this time!" Well, trying to convince yourself of something that you're having a mental dialogue confirms the fact that on some level you are in need of convincing and therefore aren't or aren't sure you are capable of being a stud or whatever other pep talk internal dialogue you're thinking leading up and during sex.
Here's a simpler way to put it--imagine you're drinking water and someone walks over and is like oh my god how are you doing that? And you're like what? And they're like drinking that water like...how are you getting it into your mouth like that? Suddenly, you're overthinking it and now it might even spill on you when before you didn't even think about it and it always reached where you wanted it to go. Sex is the same way--when you start thinking about ok where is her vagina...ok she's already guiding it in...where's her clit...oh ok...You've already started being bad in bed. It's not as difficult as you think and a huge part of being good at something is simply not having to think about it at all when and just being able to do it.
This also includes you planning what to do next like your playing operation with her body--i.e. ok now it's time to stimulate her clit...now it's time to stimulate her nipples. This is not only a boner kill it doesn't make the sex very good for her either even if you do manage to keep it up during the unsexiest sex of all time.
But wait if I'm not good at sex and I can't think of what to do next while I'm having it how on earth do i get any better at it?
If you indeed are as bad as you think then stick to the basics and don't get fancy with her clit this her clit that. Focus on the regular positions, fingering, oral, etc and master those to their fullness. When projects seem too insurmountable it's often helpful to break them down to smaller parts and it gives us confidence to know the mission is within our reach to accomplish it. Furthermore, you can be like ok dominance time! ok emotional time! if you feel the need to engage in a mode since it will be unnatural to you at first if you suck, but even this should be sparingingly in favor of just feeling out the moment.
I talk about this too much but honestly meditate for ten minutes a day everyday if you're not currently having sex frequently. It will be good practice for the sort of clearing of the mind that you'll need when you actually are having sex (a good app is Headspace.) when you're actually having sex focus on keeping calm over and relaxed feeling aroused. Later on, you'll find that sexual stimulation actually calms you down and helps you stay in the moment during sex rather than causing you to panic on what's coming next or how you think it's going based on her reaction.
I'll end on a solution to a few guys problem of not being able to get hard for a girl who you do find attractive. If you masturbate fine than the problem isn't your body it's your mind. The natural reaction in this situation is to panic--I mean this girl is naked in your bed ready and willing to let you have sex with her and you can't even get it up? The next natural reaction is to try to force arousal--either by focusing on certain body parts you find really attractive, asking her to give you oral, or even jacking yourself off to get it up. This doesn't really work and even if you do get hard you'll lose it quickly after starting sex. This is because the problem has to be addressed based on it's need. You need to relax not amp up. You need to take deep slow breaths and focus on quieting your mind and as if by magic you'll be ready to give it to her deep. Feel your way through, live in the moment, and make great sex automatic for you.
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