Feeling stuck

So my boyfriend and I have been together for 9/10 months now but we still haven’t gone that far in foreplay. The reason behind it is because I had a past experience with my ex that scared me and I still get flashbacks about it. I love and trust this guy with all my heart and want to pleasure him, but the thought of trying to make the first move almost makes me sick to my stomach. I don’t know what to do. He’s been extremely patient and hasn’t asked me for anything because he knows what I went through but I sometimes feel like I’m not good enough for him because he has been in long term relationships before and has a lot more experience than I do. I have really bad anxiety issues and body insecurities which doesn’t help at all. Please give me advice!