It sounds like you rebounded with this new boyfriend. When you break up from a six year relationship — starting a new one the very next day doesn’t give you time to process the break up. 😕 That said, it sounds like you’re happy with this new boyfriend, and you feel guilty about hurting your ex by breaking up with him. The reality is that break ups hurt — and because you were his first relationship, his pain may be even stronger. 🙁 But if you get back in touch with him, you may either give him false hope, or, if you tell him you’re dating someone new, you may hurt him even more, but give him the opportunity to realize it’s truly over because you’ve moved on and so should he. But if you’re having second thoughts about continuing in this relationship, chances are, it’s because it was a rebound relationship that helped you get over the break up. It may not be the last relationship you’ll have, but it is serving a purpose for you. If, however, you find that you’re uncomfortable in this new relationship because you just didn’t really have the chance to grieve the end of the six year relationship, then my advice would be to try and be single for a while. Six years with one person, that ends in a break up is a big deal. I think you haven’t let yourself really feel that, yet.
I hope that helps.