Star lord:

He hugs you from behind when you are talking to the gang. You squeak when he does that.

Baby Groot:

You would be siting with Gamora talking to her. When Groot would jump on to your lap and nuzzle in to your belly makeing you blush madly and look down at him.

Gamora would laugh.

(If I spell her name wrong I am sorry)

Rocket:

He would kiss your check in front of people to show that your his.

Drax:

He puts you onto his lap.

youda:

When he hugs you.