UGH WHY

So me and this guy started talking a long time ago, long story short he got into another relationship. I only found out recently the only reason he didn’t want to date was because he didn’t feel good enough for me. Now we’re starting to get closer again and everytime he touches me or brushes past me, I feel this sensation all over. IDK what it is, I’m alway a nervous wreck around him🙈😬