I can't be affectionate with my boyfriend. What should I do?

I’m going through a rough patch with my boyfriend. I’ve known him for 7 years and have been dating for 4 years now. We’ve always had a wondeful, loving relationship; however, for the last few months I’ve been having trouble being affectionate with him. I know I am still in love with him, and he is very handsome, so I am confused as to why I’m not as attracted to him as I use to be. I don’t know if this is a phase or if I’ve just changed. Furthermore, he’s been giving me too much affection lately because he is not getting enough from me. I’ve had a few talks with him about this and we’ve tried to figure out how to fix things. I’ve told him that he’s been giving me too much affection and it’s not making things better. However, although we’ve talked, I don’t feel like there is much change. I’ve considered taking a break – I know sometimes that can help, and I do not want to end things with him completely. I was just wondering if anyone has gone through something like this, what the outcome was, and what they think my best option is? It’s nice to hear opinions from others in situations like this. Thanks.