Empathize, don’t take offense of what they ask of you. They’re just curious.
Appreciate what they’ve done for you
Take one of them out 1-1 to get to know them individually
Accept that they want to have a good time with you too
Call or send them messages once in a while
Laugh with them
Introduce them to your girlfriend / bf / partner
Do favors for them
Surprise them with a visit
Be honest with them
Remember that every time you see them, might be the last time. Hug them and tell them you love them
Said with love.