Is it wrong to keep things to yourself?

My best friend Sky isn't happy with me. She's pissed at me because I don't tell her everything that goes on in my head. She's worried that I'll have a relapse and start cutting again. She's also pissed that I "trust" my boyfriend more than her. That's not true. I've known Sky my whole life and I trust her with my life, while my boyfriend I hardly trust because I DO HAVE TRUSTING ISSUES. Plus I don't like feeling all the attention is on me when I do tell people how I feel. I don't like the attention, so I keep some shit to myself, like MOST people do.

I don't see why it's such a big deal that I try telling Tomi a little bit more than I do Sky. I'm trying to get myself to trust him like I should, plus there are some things I don't want Sky to know. I don't need her looking at me different. Tomi is new in my life and is a boyfriend with an exasperation date. He graduates in June and that's when we're over. I don't believe we can last him living in the real world while I'm still in high school, and I know we won't last if he goes to college.

So mibba people, how fucked up am I?