A person is flirting with me and I want it to stop.
How would it make you feel if someone flirting with you ends up in a relationship?
It's uncomfortable because I want someone to go away
If someone is bothering you by making romantic advances that you are not interested in, you should stand up for yourself and request that the person stops. Though you might be uncomfortable with being confrontational, you have the right to be left alone and unbothered. If you do not say anything the person flirting with you will become even more brazen and will try to flirt with you more, making you even more bothered and the situation worse.
Oh no, I don't want that to happen.
You can always ask a friend to be buffer for you. I am sorry you are receiving this unwanted attention.