Wa’alaikum Salam! :D
Here are some readings with regards to homosexuality and Islam:
Spare some time to read at least one of the three. Provided are clear evidences against Homosexuality and marriages of the same gender.
Hope this helps. :D Wallahua’lam.
p.s. there is a similar question sitting in the ask box, right now. Insyallah, I will elaborate a bit more when I answer that one, this near future. So stay tuned, for the elaboration. :]