Love heartbreak triangle

to start thanks for reading, this has been stressing me out. ill try not to make it too long.

in december me M/26 and my ex F/23 broke up (dated for 6 years and lived in same apartment for 2) after i found out she kissed my best friend of maybe 11 years. my ex had a really bad alcohol issue so I introduced my best friend who has the same thing and i guess maybe they bonded a little too well. anyways i cut him out of my life and after my ex and i broke up she has lived with her parents ever since. i dont think shes drank since maybe febuary. i still care about her and see her clothes and stuff here at my apartment everyday plus we have 2 cats together.

since then ive been playing an online game to ease the lonliness of living alone and ended up meeting a girl online (F/21) and weve gotten close. she knows about my full situation, and she ended buying a plane ticket to where i live. i want to see her but apart of me feels like things wont ever work because she lives on opposite coasts of me. but i still like her. shes been nothing but kind to me and is very sweet to me.

over the weekend when dropping off mail at my ex's place to her father, she texts me after saying shes tried to kill herself because of how much guilt shes feeling. it made me realize that i still really miss her and that maybe she really needs me. im not looking for just a girlfriend fling either i wanna be with someone for a long time.

even tho she hurt me really bad i wanna save her from what shes feeling. i feel like a complete *** to the girl i met online. (id repay her for 100% or more of the money she spent on plane ticket).

i just dont really know what to do. my ex was my first ever girlfriend and if i meet with this new girl i feel like things would be over forever with my ex and i. but at the same time ive been trying my best to see if i could forget how bad she hurt me but its hard.

any advice is appreciated (i know maybe i sound like an *** and should just "pick one" but its not so easy, im also really bad at hurting anybodies feelings.

TLDR: me (M/26) cant decide between my ex(F/23) who broke my heart and kissed my best friend or (F/21) who lives on other side of country.