Sex ?Need help please

I'm 17 years old and me and my boyfriend have been together for 1 year and half but since I lost my virginity to him about 7 months into the relationship we started to do "stuff" more often, I see him him about 2-3 times a week but we always do "something" when we see each other but when I'm on my period I just please him. I feel different when I think about it like only coming to see for me do please him but I know he really loves me. ?? HELP