You can apply the previous idea when you are having a chat face to face.
The key is to casually introduce the idea in the middle of a conversation as if this was the most natural thing to do.
Actually, it is, right?
Going for a drink is easy!
Watch out for your tone of voice (guys pick up on that and instantly feel it if you lack confidence)
Say something like:
“I am off and I need a drink! Want to join me!”
“There is this shop I need to visit, let me give you a lift – I need to choose a present for my nephew and I need you on that one”
“My friend Jane, just opened his new art exhibition – Let’s go and check it out!
Check in your own situation.
I am sure that within a minute, a couple of fun things you can take him to will come to mind.