<human>: I've been with my bf for around 15 months. About 6 months ago, I moved an hour further away from my family to move in with him and we have a nice, quiet life together. Lately, though, I've been feeling detached emotionally and I've even been thinking about guys from my past, although I would never cheat on my boyfriend. 

A few months after we started dating he became less affectionate and I've brought it up to him many times. He once told me it comes in waves and he can't help it. We're similar personalities in that we don't like huge crowds or events, but I always pictured being in an "us against the world" type relationship and sometimes it feels like it's me against everyone else and him against me. 

He's a good man and treats me well (gets me medicine when I'm sick, basically gives me anything I want), except for emotional attachment or affection. He's just reserved, whereas I'm the type to read and breath poetry and let it run off my lips. He almost makes fun of emotions and I can't seem to get past it. 

We've always talked about getting married (although he thinks marriage is a silly concept), but lately I've been having doubts as to whether we're just too different. I don't talk to anyone about it because I feel guilty and like I'm constantly trying to change him. I feel as if it's building a wedge between us, me always criticizing the way he reacts to situations because he's harsh and I'm sensitive. 

He doesn't even know I feel this strongly about it. I've been putting off saying anything until the weekend because we both work a lot and something like this could take all night to sort out. 

If anyone has any advice, that would be great. Thank you.

Provide a brief overview of the text.
<bot>: Feeling emotionally detached and guilty for being critical. Not sure how to make things better/stronger or when to say we're just too different to work.