On weird come ons

I had just delivered a book to a pretty lady and I was driving out of the parking lot. The guard came to swipe his card to let me out and decided to make conversation.

'So you are leaving now...thank you for visiting us.'
'Uh...welcome.'
'Will you come back?'
'Uh...if you give a reason, I guess.' (in bad swa)

Now, maybe the whole give me a reason thing sounded seductive? Or insinuatory? Because he said
'If you give me your number will it be bad?'

I was like awwwww but also...um. But will it be bad? Like an evil to end all evils?

I nodded.
He said, 'Ok,' and let me through as I tried to temper my rejection with a 'Have a nice day!'

tSN