HELP!

I'm not on this blog anymore i have a new one but i decided to post this for my old followeres on here to answer..

Okay i met and became friends with a dude he told me his situation from the beginning he had a girl at home and i was single so i didnt mind being his mistress or what not. we would always Call/Text eachother whenever we felt the need to have it. he came by my place a few times and so on but then 2 months roll by and now all of a sudden im starting to catch feelings. im finding myself more attached and now im demanding more from him like: calls, text, seeing me more him and i know im wrong because im NOT his girl, i knew his situation from the beginning and i decided to mess with him anyway. his girl lost her job so shes always around him more so NOW that means we see Less of eachother, we talk maybe twice a week now, and im pissed im always mad at him, whenever we do talk we're arguing back and forth i even threated to tell his girl about all his side agendas which i kno is not cool but i kinda flet like it was both of our man lol weird right i was falling for dude. he says he still wants to be cool with me but its like we're never on the same level anymore. ANY ADVICE??

To any thats reading this.. make sure you kno what you're gettin yourself into theres alot of hard work being the "Other Chick" also if you know you have a easy heart you might wanna think Twice before you decide to become the MISTRESS or else things will get ugly!!