Gallavich

Gallavich  is the slash ship between Ian Gallagher and Mickey Milkovich from the Shameless fandom.

Canon
In the first and second seasons, Ian and Mickey were just having sex, and there's not much of that in those seasons.

In season three, Ian begins to get jealous that Mickey sleeps with girls. In the following episodes ian starts dating an older man in the episode May I Trim Your Hedges? Mickey is jealous of Ian and beats Ian's date. In The Sins of My Caretaker Ian is getting ready for military school and Mickey helps him, Mickey asks what Ian sees in the old man Ian sees. Ian replies: "he buys me things, orders room service, is not afraid to kiss me." In the same episode Mickey kisses Ian for the first time before robbing some house. In Cascading Failures Mickey invite Ian to sleepover, in the morning Mickey"s dad covers the guys in sex, beats them up and calls a prostitute who'll fuck Mickey's gayness and Ian tells to watch. Ian hears that Mickey is getting married to a prostitute who was supposed to fuck gay out of him and she get pregnant. When Ian goes to talk to him about the wedding, Mickey doesn't say anything at first, Ian provokes him into a fight by telling him that he is gay and that he loves him. Ian come to Mickey before wedding, they fuck after Ian ask what with wedding Mickey say that for him is just piece of paper and that not everybody just gets to blurt out how they fuckin feel every minute. Ian gets drunks on the wedding. At the final episode Ian comes to Mandy Mickey's sister and tells Mickey that he signing up to army.

In season 4 when Mickey heard that Ian has a trouble he started looking for him.