(Spoiler alert if you haven't seen Riverdale 2×15 yet)
So I have this theory that Chic is acually FP's and Alice's son. I know that people been already talking about it but just hear me out:
In 1×13 we get to know that Betty acually has an older brother. We don't get to know him until season 2, but we get to know a story in 1×10, told by FP Jones.
Apparently Hal and Alice had a big fight when they discovered that Alice was pregnant. It was still in their high school times, to be more specific at their homecoming. Of course FP heard their fight back then, because otherwise he wouldn't know about it. But mabye because Hal wasn't the father of the child.
I think that a couple of episodes later we find out that Hal wanted Alice to get an abortion, to get rid of her child. Scared and alone, Alice left her home and went to the Sisters of Quiet Mercy and brought her son to world, later giving him up for adoption.
I think 23 years later Alice finally met her son again and brought him home, but Hal wasn't really happy about it. To be more specific he wanted to get rid of Chic, because he didn't want a "stranger" in his house.Of course I understand that he hasn't seen his son in more than 20 years, but would he still consider him as a stranger? What if he isn't his son after all?
And there's where 2×15 comes. In that episode we get to know that Clifford Blossom gives his heritage (money) to everyone who can prove they have Blossom blood running through their veins. Betty and Polly of course want to get it since they do have Blossom blood from their father (Alice doesn't). Pretty much at the end of that episode we see that Betty secretly sent Chic's blood to the lab too in order to get even more money. But surprise surprise: Chic isn't related to the Blossom's.
Bam! We have the prove right here that Chic isn't Betty's and Polly's brother. But what if he is their step-brother? Alice doesn't have Blossom blood, just like FP of course. So it would be more than possible that Chic is indeed Alice's and FP's son!
We also know that FP and Alice have a shared history: Alice beeing part of the South Side Serpents, them knowing each other from school, their innocent flirtig and jokes. So here you have it: FALICE IS REAL