Caught my boyfriend masturbating, how do I keep things from being awkward?

[Anonymous]

My boyfriend started dating a month ago. Everything's been going well but we haven't been having sex. I don't want to have sex because I've never had it and want to wait until I feel ready. My boyfriend has been patient and has said he's fine with waiting. I've been getting more comfortable with the idea of having sex and am slowly being able to imagine myself getting intimate. But the other day I walking in on him masturbating, and it was so weird. I said sorry and started to leave but he stopped me and apologized saying he should have locked the door. But still feeling the tension I left. I just feel like this has set my progress back. It's made me scared again. I don't know if it was seeing him, or knowing he thinks of others or just knowing he masturbates. If I think about it I guess I assume all guys masturbate but knowing that's he does it just freaks me out. I don't want this to ruin my relationship especially because I told him I was feeling more comfortable (I don't want him to get irritable and leave). How do I get rid of all these weird feelings?

[Anonymous]

Natural don't panic