What should I do? Boyfriend question?

Okay so my boyfriend and I have been together for 8 months and ever month after a while he always gets a little "bored" with our relationship. He tells me he needs to "think about it" and "figure out what he wants." And I feel like I end up fighting for him to feel something again. Two questions..is this wrong of me? Is there a point when I should stop fighting? I just feel like I should put my whole heart into him and let him do what he wants because that's what will make it fair. I know I love him and anyone I love is worth fighting for to me, but from outside people looking at me would I seem crazy to always have to reassure him?...ughh. im confused