falling in love with my friends husband

Dee
Ok so here goes the story so me and my friend have been friend for abot 5 years i always new she was married she always talked about her husband and how they are high school sweet hearts and all the Good thing he has done for her how he accepted he being pregnant by some other guy and him taking that baby as his and that they have true love well the day came I met him and I instantly felt a connection but also instantly put my boundary and told my self it's not possible well he ended up going to prison for 8 years  fast forward to couple weeks ago my friend tells me she's over her husband and their getting a divorce (shocking) and tells me she's in love with this new guy and told her husband of 14 years from one day to the next that she didn't love him and couldnt talk to him any more bad she's pushing every one away for this new guy she let her sister and her 4 kids on the street  for this guy anyways I got a hold of him and we talk and he told that he had a low key crush on me since the day we met we talk every day I started talking to him to convice him and her to stay together but I'm falling for him idk what to do I'm so confused