lawd help me

so i have this guy ive been talking to we dated for a while and I may be pregnant (find out tomorrow) I'm 17 and he come to find out has a girlfriend he's a lil older than me and she's his age and now im in this big world war with him and he said he's going to leave her that he doesnt want her but i feel like I'm wasting my time idk what to do😞 its hard to just stop talking to somebody that you have strong feelings for especially if sex is a big part of it...