welcome :D to the friendzone
be sure you are out of arms reach (and throwing distance)
the truth in a respectful way!
as kindly and gently as possible. it takes courage to even admit it
Not a guy, but have a suggestion anyway from a girls perspective...
You don't have to be mean spirited or lie to get your point across.
That just makes you look juvenile.
If she gives you her number anyway, then you really don't want it.
and then find the closest trash can... no harm done.
A girl once said to me, "I want you for my husband!"
I replied, "Good! SEND HIM IN!"
Say you are really depressed and that you have to work things out, also say you will call her if you need help. Some mushy stuff about feeling you can depend on her etc. and you are sorted.
tell them that your gay and your not interested in women whatsoever