Does your husband know you are seeing this guy again? If so, can things be kept in stasis for awhile while you sort through your options?
I sense a bit of NRE (New Relationship Energy) going on here. It is a "powerful drug," and can inhibit judgment and impair the senses.
Do you definitely have to choose between your husband and this other man? Can't choose both? If so, choose carefully.
I am not inclined to tell you what to do, just trying to gain and put it into some perspective.
Love means never having to say, "Put down that meat cleaver!"