Omfg i need some serious help my bestfriend who also happens to be my bfs cousin told me that my bfs in a gang?

the gang is 3ni amor de 7 its a dominican gang i have even seen pictures of him holding a gun!!!!!! he is in D.R. right now and he doesnt know that i know. how do i talk to him about this? oh did i mention that he has an ex-wife and 2 year old son over there and he's comming back to america in april and he wants to marry me and bring me to DR with him? we also havent seen each other for almost 2 years!!!!!!!!!!!!! and we barely know each other anymore but he thinks we know eachother,.......and as for advise goes dont tell me to leave him because i have done it b4 and i cant live with out him i felt like i was i dead 2 say the least!!!!!!!!!!!!!!!!