<human>: Can you succinctly summarize the text in 1-3 sentences?

All my relationships do not last past 2 months, because of me. I 'think' i like someone, i get on with them, but the moment commitment is needed i freak. I have serious anxiety about hurting the girl, suddenly this person who i thought was perfect for me, i find faults, I think about spending everyday with them and I freak. it scares me so much, sometimes im by myself so lonely and all i wish for is that they were there beside me, and sometimes when im with them, im holding back so much emotion and just smiling and nodding I wish i was by myself.
I wait, a wait ages to find someone who i think is right, i don't even sleep with people who are not a match.

 so earlier last year I met this girl and shes great we could talk, I can make her laugh and shes a great person, i've been on the fence, 'make sure you absolutely like her before you say anything' I waited 5 months, she even started to think i lost interest, anyway, the last week i we were bonding well and I told her, I like snd she told me she really likes me. Then BOOM, anxiety serfious bad anxiety, I don't enjoy being around her sometimes? whats wrong with me? 

How can i like someone so much yet find them agitating. She's already noticed smethings wrong, and here i am again ready to hurt another girl for reasons i can't even possibly explain to her.
It may sound cocky, but i guess some conversations are mundane, I don't find the topics important or the subject is boring, but yet every girl ive ever met makes me feel the same. I don't want to break it off with her, rather I want to try and explain it to her, without being blunt as I don't like you as much as i thought i did, or sometimes I want to away from you. Whats fair for her, what should I do?
<bot>: My attitude towards relationships are bipolar rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr