falling out of love with my husband

It's just simple ... j don't love him like that anymore, he's a good man and I do still care about him a lot but Iv lost all interest in him, we were 16 when we met, 19 when we got married and we've both grown up since then (now 22) and we've grown into 2 different directions. We are both completely different people we were when we were younger and in just not attracted to him physically, emiotnally or mentally anymore. Our personalities don't mesh and I'm starting to feel more and more miserable. Our relationship really took a blow during my pregnancy and now as we raise our child. The only reason I stay is for my baby, I don't want her to miss out on her dad and I don't want my husband to miss out on her (backstory, I have up everything, friends family, education and career and moved from U.K. - USA to be with my husband so if I were to leave I would return to the U.K. As I have no one here apart from himand I don't want to split him and his daughter up) Iv spoken to him about it but definitely not told him what Iv just said above more so just that we need to re connect as a couple and get the spark back etc he's not really bothered in fixing anything but I can't go on with a relationship like this! HELP!!