<human>: We have a stable relationship we live together for several years, both have stable jobs near by, are good friends, and support each other.  I feel like I need to marry her this year but I just don't feel inspired too.  I know for a fact it's because of the sex life.  

She is just more shy and reserved about her body / body image and I'm much more open and aggressive.  I feel very attracted to her but the thought of this being my sex life for the rest of my life makes me very unhappy -- but I can't see myself leaving her. 

Like the relations arn't bad I just don't feel a strong connection with her about it. 

Any advice or perspective welcome.

Can you give me the gist of the text in a nutshell?
<bot>: In a long and stable relationship. Need to transition into marriage.  Feel unable to make the commitment because not a high sexual compatibility.