If you feel it's over with your current boyfriend, finish it with him. Have a break, then look at a new relationship - I think you're excited about this second bloke partly because you think it's over with the first but you're not quite ready to branch out on your own yet. I speak from experience here. Think very carefully, make any decisions about your current relationship based on the relationship alone, not this other guy - otherwise you may find yourself taking a course of action you regret in the future.