My ex came back and I'm in a relationship

I'm in a relationship with this guy who treats me so amazing like whenever I'm with him it's nothing but laughs and a good time. Today my ex boyfriend snapchatted me a video of us when we were together and when I asked him why he still had it he said it's because he still loves me... I broke up with my ex 7 months ago and got with my boyfriend 6 months ago

I'm actually really stuck because I still have feelings for my ex and he wants to get back together with me but honestly I told him that we could only be friends

Did I do the right thing? Omg this is hard