How do you know if your girl friends dad likes you?

if they dont hurt you when you come to the door lol jk its hard to tell but if you want to get a dad to like you just dont really touch your gf around him like arm around the shoulder kisses holding hands ANYTHING be very polite smile complement his house say hello when you come to the door strike up a convo that doesnt involv your gf at all just be very polite

yeah ditto all that up there but you might also want to try and keep him updated on everything you were thinking about doing like "hi mr. delgrove! Hannah and I were thinking about going mini golfing today!" if he doesn't make a sour face go ahead and go mini golfing but if he disaproves someway say "but i passed by it on my way here and it looked really crowded so i thought we could go Bowling instead!" if he still makes a sour face say "but its such a nice day to be outside so do you have any suggestions on what we should do today?" or something like that... also if he tells you your girl friend has to be home by a certain time DONT BE ONE MINUTE LATE be early if you have to but NOT LATE

ya she has really good points to update and being kinda early great tips