Re: b/f doesn't seem to be aroused
Very happy to have been of some help to you, Kra.
Give this some time and put some of the ideas suggested here into practice and see what happens.
Most importantly of all -- DO NOT EVER blame yourself or think YOU are sexually unattractive. This is something a LOT of ladies tend to do -- and that's understandable: by nature, women are more emotionally tuned to sex than men are. Yes, you DO have sexual "responsibilities" to keep things interesting and fun for him -- but he has the SAME responsibilities to YOU. So, once you start doing new things and make it more interesting, HE will probably want to bring up suggestions of his own. And hey... just TELL him to suggest things to you -- odds are good he'll LOVE hearing that.
Two last things:
1) Men DO like variation and we ALWAYS look at other people. This is tough for some women to handle, and understandably so. Even us GUYS do not like it when our partners look at others, even though WE do it all the time! But just because we LOOK does NOT mean that we do not desire our partners anymore -- we just want new, fresh visual cues. YOU can help fill that need of his simply by changing things around, both sexually and in your appearance. Clothes, lingerie, hair, makeup, whatever... just mix it up a bit.
2) If he has asked you to move in with him, odds are good he's VERY much into you sexually. Not many guys would want to move in with a gal they do not find attractive! Let that ease your mind, OK?
Good luck and have FUN practicing new and exciting sex!