PLEASE READ & HELP!!!! i have two big problems. </3

Well i have two major problems , this is going to be long, so please try your best to help me out.

 Okay so i have an ex, she's bi. & when this girl, she's pretty much amazing. We were together for awhile, & i catched major feelings for her. But we, broke up. Well she broke up with me. She was pretty much, one of those weed smoker people. She was high half of the time :( & well things just didnt work out, because she wasnt paying attention to the relationship half of the time. :'( Well she's been texting me lately, with all these very pretty messages, she's telling me how she still loves me.

But she cant be with me cause she's going to college and we will barely see each other. But she tells me all these sweet things ,how it was all her fault and how she was a really bad gf, and that i was just perfect, and she lost something good and that she would do anything to be with me. That was two weeks before now. Well now she has a bf. & she's sopposely "loves" him . So then the other day she textes me saying that she's still not over me so i dont get this girl. And now she doesn't text me anymore. So i'm like what the fuuuuuuuuuuuuuuuck?

 So my other problem.... is with a straight girl. Well thanks to her, i'm forgetting my ex, but i have no idea what to do because my life is a total mess right now.

Okay so there's this beautiful girl who is one of my closest friends, & she's gorgeous and i'm happening to have a crush on her </3 She's very comforting & flirtacious. Two days ago i went over her house, & she was being extremely flirty, we layed in her bed & she kept leaning towards me. We glanced at each other more than 20 times. While i was talking, she was even glancing at my lips, but the problem is she's "straight" atleast she says she is. She's said she would totally do me, but women now-a-days are very flirty. So i'm stuck in this situation. I ended up leaving her house at 12 o'clock at night from 2 o'clock that i got there :S

She's defiantely a keeper. And i think i can fall for her hard, but im quite not sure yet if i should. I wouldn't want to tell her im into her, she knows im bi & she's totally cool with it, she flirts with me and everyone, calling me names like babe or boo and those things, but i dont want to tell her anything because im afraid to ruin our friendship. & even worst i'll be crushed if i get turned down.  I have no idea what so ever what to do. She's definately a big turn on, & she definately compliments me, like for example, my perfume, the way i look, & etc. But she's very confusing, & i'm not sure if she just feels like a "playing around thing" or if she's attracted to me.

Maybe it's just me, but when she looks at me she smiles alot, & i can definately make her smile. She textes me like crazy. And everytime i mention liking someone she seems anxious to know who it is. But maybe she's just showing her care for as a close friend. But oh welllll idk what to dooo...!!!!!!!!!