Had I met a guy like you in my late 20s/30s I would have been ecstatic. I've been in relationships with guys with a long track record of relationships and I'll be honest, it is hard not to get insecure or jealous. I myself have had only two relationships and I'm in my 40s. So the right person for you will celebrate the fact that you dont just jump into a relationship just to be in a relationship. I always thought I would marry the first person I seriously dated. It didn't happen that way, but I always thought it would be ideal. I know many great couples where it happened like that for them. I think it's a blessing to not have serial relationships.