When Haytham finds out Connor is his son, he wants the young man to stay with him. Connor isn’t keen on the idea at all but eventually relents. Haytham tries to be a father figure but Connor’s having none of it and so Haytham settles on attempting to act as a friend and companion, which seems to have better results. Perhaps working a little too well if his son pushing him against the wall and kissing him is any indication.