<human>: I've been dating someone for two years. We work well together overall, but for the last several months, I've had the frequent desire to call things off.

I'm conflicted because it's nothing in particular that she's done—I just feel that on certain levels we're incompatible. But I find it impossible to know whether those incompatibilities are just my projected insecurities.

She's a person who likes lots of affection and overt romantic gestures. I'm someone who prefers fewer. We have different taste in a lot of cultural things, and I find myself silently trying to pretend that I'm enjoying something when I absolutely hate it. This occasionally makes me feel isolated, like I have to live one life with her and another for myself, as I end up really wanting to spend time with people who I have more in common with. When I do things that I like, it's usually by myself. I do invite her, but we're both pretty busy, and she frequently declines.
 
Even after two years, I get anxious being around her and some of friends at the same time, for fear that she will do or say something embarrassing. I think this last part is what makes me feel like such a jerk.

I've been trying recently to focus very honestly on doing things to make me fulfilled personally. In addition to being more proactive about spending time with friends, I've started working out more and am finishing up applying to graduate school. So far this has just made me feel that I don't really want to be in a relationship right now. If I could magically teleport out of the relationship without the emotional labor of breaking up, I think I would.

Now I feel like I'm being doubly mean by dragging the relationship along when my heart isn't in it.

I guess my question is whether anyone else has suffered from problems of insecurity and projected them onto a partner and how that was disentangled from a genuine drifting apart. How have other people helped bridge growing distant? Or should I just have the guts to read the writing on the wall?

Can you give me a shortened version of the text?
<bot>: Feel distant from & occasionally embarrassed by girlfriend. I want to know how to best tell whether this is just insecurity talking or if it's time to end the relationship.