Hopefully the person you're with is in the same space psychologically. If he/she is then I'm sure it will mature over time. In the end, that may be a healthy approach to a long-term bond.
For a lot of reasons that are his business and not mine to share, I don't think it's exactly the same, but I've gotten comfortable with the fact that either possible outcome will end up being good for both of us. If things work out and I can be in love in a selfless way in the future, I really respect his character and trust him to be a person who will accept my love and return it. If not, I think the relationship has helped both of us learn about ourselves, and we're both people who have a history of being able to let go of resentment of past relationships and be friendly toward ex-lovers, so I think if we separate eventually we'll look at our relationship as having been a positive.
Hm. It is a weird part of my character that it is impossible for me to be friends with a girls who have broken up with me. I cut them out and never speak to them again. I don't know exactly why I do it. With girls I've dumped, I don't cut them out, but I don't feel comfortable talking to them or having any type of relationship with them. I think I feel that way because of guilt.