I first thought it might be a f/d, but I thought it might be a hand like 87 as well. 87 raises pre-flop, "to mix it up" tosses out a standard bet (not a cbet since he doesn have 2nd pair) you raise representing TP+, or a bluff since this flop likely misses him. turn is a gin and you can't POSSIBLY put him on a 7, so call with your TP.