who are you?'s question (3)

Okay so I just broke up with my boyfriend because of nothing he did, the reason I did was because every time I looked at him I felt like he was way way way out of my league and I feel like he deserves someone better than me. He always sends me kind words of affection and it just makes me feel bad so I was wondering if this is something I should try and fix or just keep living like normal. I also don't like to speak up in public situations because I feel really nervous and I think it has some ties to this.

My old magago account is nowhere to be found so I want to find some new manga (any category) and I'm sure many of you do to. You can just leave a link if you want but a discription would be great (remember you don't have to).
Let me get started, this mangago is about two childhood friends that fall in love. The thing is that the one boy thought the other hated him since he moved in after his parents deths. Though my explanation can't give full credit for it's cuteness so please read: http://www.mangago.me/read-manga/cherry_blossoms_after_winter/?av=4 (it's called cherry blossoms after winter).

I can really like someone, like everytime my brain is free and even when its not I will think about the person. Or make sacrifices in my schedule to make sure I pump into them at school. And text them often.
But as soon as they tell me they like me back my brain is like hell no and I dont want to date them, like I can go from AHHH I LOVE YOU BUT IM TOO SCARED TO SAY ANYTHING to YOU LIKE ME AND THATS WEIRD THERE IS NO WAY YOU ACTUALLY LIKE ME WTF IM NEVER TALKING TO YOU AGAIN.
Is there a way for me to fix thisssss