I don't know what to do anymore

I met a girl this weekend and she Loves me, but I'm writing with another girl thats intersted sometimes i hate that shit sometimes shes interested sometimes she isn't, i smoke weed all Day and drink at work bruh i can't even function properly and now i gotta Decide what to do, my brain says i should stay Single because its easier, i never had a relationship this shit is too much for me.