My fiance and I ran into my ex on his honeymoon!! Brought up memories.hellllp!!?

Im engaged and I cant quit thinking about my ex.. He got married a month ago and we were vacationing in the same place they were on their honeymoon (which we didnt know at the time) and we actually ran into them. HOW RANDOM AND HORRID!! (i was with my boyfriend and a friend..) ha. It was probably the most awkward thing ever. He had been trying to get me to come see him and professed his love blah blah and i wouldnt and told him to quit calling me because I had a boyfriend and then bam 5 months later he is married. Maybe Im just thinking about him and memories because I saw him and his newlywed wife? Dont get me wrong I would NEVER do anything and I love my fiance way more than I ever did him..and its not thoughts of wanting to leave my fiance and go have an affair with this married man. Its a I want to know whats going on in his life kind of feeling. Its so odd. Whats you guys thoughts?