My boyfriend is starting to annoy me

So me and my boyfriend as teenagers use to be all over each other however now I’m getting annoyed when he tries to kiss me. I feel like it’s too much and I don’t want it too lead to sex because I’m not on birth control and we BOTH prefer not to use condoms. So I think that’s always subconsciously on my mind which makes me annoyed at him for doing little romantic things like that. We also live with our parents and there always home no matter which family so I think us getting caught is also a reason however I can’t help but to think there’s something else that causing me to be annoyed.

What do you guys think?