Worried about my first time

I’ve been with my boyfriend for almost two years and we haven’t done anything yet and I want to but I’m scared and nervous about it. I’m mostly scared for the pain. I’m also scared that once we do something he will leave even though he said he won’t but a lot of people have left my life lately and I don’t want to lose him too. And lastly I’m nervous that my body won’t be how he imagined even though he said he loves my body. I also want to know if there is any way to get over the fear that people are judging me in public because I have that and I get nervous about kissing my boyfriend in front of strangers.

Sorry for the rant😁