I (18F) can't decide wether to leave my "ex" (18M) or risk a new relationship
So for context we broke up around 3 months ago because he said he couldnt handle long distance since I moved ~140 miles away. I now live with my parents who do not like him at all so they said if they caught me seeing or speaking to him they'd kick me out (I go to a local university so I cannot afford living on my own). We have continued speaking after we broke up and at first I was always begging him to call whenever I had the chance or always dragging out conversations just to make him pay attention to me but he'd always have some really lame excuse as to why he couldn't. After I realised if it were me in his position I would've dropped everything to seize the rare opportunity to talk over the phone even if it were just for a minute I started losing feelings for him but continued talking to him. Now while ive still been talking to him I've started developing a crush on one of my classmates (18M). We're kind of friends, since I hang out with some of his friends and he's there sometimes and he walked me home once. I told our mutual friends I had a crush on him and they were in support of me asking him to hangout and whatnot, but I don't know if he would be up to dating me or not. Back to my ex, im almost completely over him but he's been asking to meet up during the next school break and I keep entertaining it. By now every time he talks to me for more than 8 seconds is just to talk about sex and I feel like im nearly cheating on my crush? if that makes any sense at all. Basically I would rather keep my ex on the reserves in case I don't get with my crush but I dont get my own house until the end of next year which seems a really long time to be in relationship limbo. I know it makes me sound like a young ho but I just want to have the knowledge if I dont end up with my crush there's a man out there willing to date me.
TLDR; I don't know wether to keep my ex in the reserves or completely break all contact and persue the crush I have anyways
I'm sorry this is worded so poorly but this is the first time I've voiced how I feel since I can't tell my friends since they'd be influenced depending on if they know my ex or not, my thoughts are just really jumbled. Feel free to ask for any clarification on anything