FFM three way relationship!

Sadie

I am starting up again an old relationship with my ex girlfriend and my boyfriend and I really love her I believe because every time I’m near her we both get giggly and like my stomach has butterflies and I get shy and I accidentally told her the other night love you in person. I really do have strong few for her but I want advice on what to do. Should I ask her out or even ask her to move in or what not? I’m really nervous but I feel I love her and want her in my life forever just like my boyfriend. Please help.