Hi, I'm a 23yo girl in a LTR with a 28yo guy. I would characterize my SO as having a majority of alpha characteristics. Anyways, recently there have been some "shifts" in our relationship.

Overall, things are great, and I believe we are a great match - I'm the happiest I've ever been. Recently, however, there have been some changes. We've been officially dating about 5 months now, and I feel like his sex drive (for me at least) has drastically decreased. I would definitely say I have a higher sex drive than him (although it's not like crazy high, I would say I would love sex with him most, if not all, nights). In the beginning, this was different, we had equal sex drives. He has put on about ~10lbs since winter started (I think this is normal for him to put on a bit of weight in the winter, and then lose it in the spring when his warm-weather hobbies start back up), but honestly this hasn't bothered me at all.

He has continued to 'maintain frame' and even occasionally runs teasing 'dread game' which keeps me on my toes. I feel myself constantly striving to improve myself since meeting him. Most everything about me has stayed the same or improved, I've even lost some weight and improved my wardrobe quite a bit since meeting him (FYI, 125lbs 5'7"). So now with his decreased sexual interest (but his emotional treatment of me has maintained itself - very loving and "cuddle-y" when appropriate) I am beginning to get concerned. I've never rejected anything new in the bedroom, but recently I feel like I'm the one initiating sex and usually, well, I just don't feel that he's as "into it" as he used to be.

This concerns me because, although I know he has that emotional attachment to me, I feel that he is a very sexual guy and maintaining a sexual connection is important to me, but honestly this shift in behavior is very concerning to me and makes me feel more distant in the relationship. I ask him if everything is OK after sometimes and he just says "yeah". Right now we have sex once maybe twice a week, but at this point, we haven't had sex for about 2 weeks. Am I just reading too much into it? Is it winter blues or has his libido just decreased with his decrease in activity b/c cold weather? Any tips for me?