Tricky 25/50 Hand

[theBruiser500]

5 handed or so 25/50. I just said "watch out guys I'm on tilt" and then someone rightly pointed out that I wasn't really on tilt. Then a LAG who is kind of crazy made a crazy play and said "see, I am really crazy". He is a little crazy not a maniac though he is an okay/bad player. This LAG calls a lot but isn' aggro although at first I thought he was because he's in so many pots. He never reraises preflop. I have 7k he has me covered.

I open to $150 in the SB with JJ, he raises to $500 I call. Flop is 8h 4h 2c. I check he checks. This is weird, I don't think he'd check here with a high pocket pair. Turn is 4s, what is my plan? I bet out $500 and he raises to $2500. What now? If I decide to play this pot is my move all in?