I suspect that a new team member wanted to meet with me for the wrong reasons.
What ulterior motive are you suspicious of?
Tell me one, don't you think it's suspect to go out for drinks with someone?
Not really, to tell you the honest truth. My friends and I go out for drinks all the time, and I know a lot of people who will have drinks with their coworkers. You should give them a chance and see how it progresses.
Yeah, I really don't want to be alone with that person.
Just take it slow and get to know them before you do something like that with them.