Sounds like, as you are not married and you're going through an intense time with this new guy, you might as well go with the flow - see what happens next time. Have you made an arrangement yet?

This experience has inevitably changed you so you are not the same person to your boyfriend.

I agree with rosegretta though - don't wrap this all up in twin flames and unnecessary spiritual stuff. Many, many people go through similar experiences with a new guy. But it eventually calms down (unless yours is a very strange relationship that can keep up intense romance and sexual exploration forever). That doesn't mean "twin flame" necessarily which seems to be about spiritual development and makes a lot of demands on the two people. Think carefully before informing this new man of your thoughts. Read a few threads here and you'll infer that many wannabe twin flamers haven't told their hoped-for partners. They suspect the guy will run away - as indeed he might, suddenly faced with his relationship turning into something deeply spiritual.

The hope is that when it calms down, you get on very well and can get used to each other. Many fulfilling relationships endure - and if there is romance it will always be there in gestures that express your appreciation of, and devotion to each other.

But it does look like life with your earlier boyfriend is never going to be the same (unless you're a damned good actress). That doesn't mean it's over completely. What if this new encounter doesn't work out? You may miss the security of that earlier relationship (if it was there - 7 years is a enough time to establish yourselves) and some reconciliation may be possible. My own belief is that as long as a couple are willing to live by the same rules then things can be fine.

Wishing you the best outcome.
Lorelyen