I don't mean to power level but I know exactly what Pat is going to try to do. He is going to start noticing that Ade is achieving major life milestones, graduating high school, getting married, having a kid, etc and try to worm his way in. At that point in his life, he is going to see Ade as a means to having a legacy.
Like chances are he will do something retarded like show up uninvited to her graduation and try to pass off his rustang off as a graduation gift to make up for abandoning her.
She isn't going to be interested as at best, she doesn't know Pat, at worse, she really resents him. It's going to be an awkward scene and Pat will go to twitter to rage.
Eventually she will be pressured by her doc to at least try and get medical history out of Pat. He will think this is just an excuse for her to restart the relationship as opposed to what it actually is. The conversation will go south and he will start blaming her mother and father for turning her against him. She is going to tell him to fuck off and never contact her again. He'll go to twitter and rage at his trolls.
Deadbeats do this all the time. Pat is so fucking predictable.