Hi, it's me again.

In case you haven't read my earlier thread, I'll repeat:
So...I'm a girl turning 20, and currently in a relationship of 2½ years with my boyfriend. I'm a submissive anti-feminist kind of girl. I adore my bf and would never cheat on him etc etc. I'm very devoted and quite old fashioned in that sense. Expect when it comes to sex, I'm great in bed pfft. (I just thought those might be points relevant to guys...)

I really want to ask this question from guys: How to keep sex and nudity exciting in a LTRS?

Sometimes when I realize how guys drool over girls, how much effort they put into getting into someone's pants, I wonder if my boyfriend still feels the same way about me. I just don't want sex and nudity to become casual. I don't want him to get bored with me. Is there some way to prevent this?

I'm a very submissive girl and I like to please my bf. I'm generally very nice when it comes to sex, as in, I'll be happy to execute any fantasy of his and I'm pretty sexual over all. However, will giving too much sex and being too "easy" (even in a relationship) take the glory out of it eventually?

Should I give in less, make him masturbate more to substitute me sometimes, or would that just be a relationship killer? How to keep him interested?

To be honest, he tells me not to worry and I have no apparent reason to. He says he's very happy with our sex life, as I think he should be. But I still think about this stuff lol. I just want to be able to create sexual tension, even in a LTRS!

P.S. I noticed there's a better board for this but I'm not qualified to post there yet. . . .