OP:
Talking to your friend about your faith without being told by God to do so will likely not help anything and result in heartache. If God tells you to speak to your friend about Jesus or a related topic, fear not, for those words will be given to you in that time. Even if your friend's ears were not ready to receive, if God called you to speak, then it surely planted a seed.
Luke 12:11-12 (NLT)
"And when you are brought to trial in the synagogues and before rulers and authorities, don’t worry about how to defend yourself or what to say, 12 for the Holy Spirit will teach you at that time what needs to be said.” "
My husband had an interesting response to a homosexual's statement of: "But it is love, I would die for my partner." My husband said, "And I would die for my mother or my sister or my brother, but that doesn't make it appropriate to have sexual relations with them."
I've personally, though not been sexually attracted per se, have seen some women before and thought them very beautiful, just like most women I'm sure (Who wasn't aware of the (supposedly) "prettiest girl in school", for example?). Sometimes the thoughts came from a place of envy, for I was once very insecure in myself and almost hated the other girls for their looks as compared to my own. Nowadays, it's typically just, "Wow, she looks pretty" or "She looks nice today." It never goes into lustful type of attraction, I've never had thoughts like that about my same sex. But I thought it's worth mentioning, because how many homosexuals take an initial innocent appreciation for beauty to a deeper level by pondering and thinking and lusting on the thoughts?
Lastly, God has taught me that homosexuals, bisexuals, and especially transsexuals come from a place of deep pain. They've been hurt severely, usually in their childhood and developmental years. In addition to the mental component, we've had a lot of physical factors, hormonal manipulation, especially pharmaceutical meddling. After all, pharma does come from the Greek word pharmakeia, which meant witchcraft. Then there's the spiritual factor, by which they are seeking after and attaching themselves to lustful spirits.
All said and done, there's many different facets to this issue, and you should seek the Holy Spirit in all that you do and ask to be guided in your steps and your words.