I haven't read all of the posts here so this may have already been mentioned...
There is no doubt that Jesus associated with some serious sinners, but I don't THINK He would have went to a homosexual wedding.
Let's look at His meeting with Zacchaeus.
Zacchaeus was a tax collector. Back then tax collectors had a reputation for being crooked. Despite this, Jesus went to his house; however, Jesus did NOT go out on a collection run with Zacchaeus and participate with his sinning.
If Jesus was invited to a homosexual wedding He would probably talk to the sinners, but I don't think He would go to the wedding which would be participating with (or even celebrating) their sinning.
Oh, and while the Samaritans and Jews may have came from the same tree (so to speak), the Samaritans were a sect of Judaism about as much as Pentecostals are a sect of the Roman Catholics.