In a relationship with someone but inmay have feelings for another guy

I am in a long distance relationship with someone and it's almost been a year. I see him pretty often (maybe like every 2 months for a week or two). But it's still very hard. A few weeks, this guy that I used to be absolutely in love with told me he had feelings for me. At first I was like um well I'm in a relationship but he has still been pretty persistent in trying to hang out with me. I really want to, but I don't know how because I will get questioned. My intention is to go out as friends and see how I feel but I have in my mind of course that I am in a relationship.. however I have still yet to set a date to hang out because I don't know how to tell my mom I want to hang out with this guy... because she knows that I used to be crazy for him. He is getting tired of asking all of the time.. and I fear he may be losing interest. I don't know what to do. I am trying to be flirty with him to make him still interested so he doesn't give up but at the same time I don't want to cheat because I care a lot about my current boyfriend too. The distance is just a huge barrier... I am so confused and I don't know what to do. I feel so much pressure comin from all sides