I think I need some closer

I really need some advice…well me and me dude has been together for 51/2 years and back in 05 we took a break and I met someone else …I wasn’t even interested at first but the more he said he liked me and he was real cute …I gave in and we dated for about 31/2 months until we did stuff :) and I started getting feelings for this boy…well long story short me ,my current man now and my ex lets say stop talking on sum bad levels…n its been 2 years.. And he contacted me over the computer and we started talking as friends but then he started bringing things up from the past …like I never forgot about you and just lil things about are relationship back in the day …n it started bringing back some old feelings and I no I don’t want to be with him but I do want to see him 1 last time …I think I need some good closer…the only thing is ,is I don’t think my current boyfriend would understand and wouldn’t agree 2 me seeing him…which I totally respect …but I only want it to be a one time thing…he would never have 2 no …just so I can get this off my chest…and I just don’t no what to do I need sum advice…help