my boyfriend and i have had amazing sex for the past years in our relationship, me mostly carrying the spark, and that was okay with me. recently, he's slowed down our sex to about 1-3 times a week when we usually have sex every day. when we do have sex, he makes it a point not to look at me. i know this might sound like a lot to some ppl but it's not normal for our relationship. the part that makes me worry is that he nonchalantly mentions that i need to start doing 'crazier shit' or saying how girls lose their looks when they get older, (i'm 20 mind you). recently he also has had sudden change in taste. we watch porn together and obviously see him check out girls, but he's changed from liking girls that, well, somewhat resemble me to the exact opposite. i've been trying really hard to work the spice back up and it's not like i'm in bad shape, i work out and diet regularly. is the chemistry just over between us? i still find him extremely attractive, but i'm afraid he's lost hope in me. this is pretty desperate but i'd like a second non-partisan opinion to help me make up my mind.