Oh poor you! I've had something similar happen to me (But in reverse).
I've read that people sometimes put on a front when around others for attention - like actors do I suppose! His 'obvious' sexuality and 'alleged' criminal behaviour may be part of his masquerade to try and feel 'normal'.
Is this 'friend' and 'someone you know' trying to sabotage your relationships by alluding to your inability to form relationships? Do they secretly want you to be unhappy and treat you like a scorned child instead of a fully blossomed goddess? Are they capable of planting suggestions or causing through action means to enable them to undermine your confidence? If they are then now is the time to reclaim your fragile soul and stand up for what you know to be right.
Perhaps, if you still like him, you could contact this chap you worked with and indulge in a little flirtive activity with him to see if it sparks some motivation into your womanly desires. If there is any truth to his acting up then playing a little role-play could very well be the way forward allowing you each to explore the very fantasies which sustain your dreams. Swapping a busybody acting like your dad and telling you off for someone who worships you and fulfils your hungry, insatiable needs - is exactly what you want!
It might be just the distraction he needs to keep him from his 'alleged' criminal activities and to confide in someone who understands what it is to be alone but have such unfulfilled needs and desires. I'd imagine that the potential between such magnetic beasts could set London on fire!!!
I've watched more than a few episodes of Glee.