We crave attention--married male coworker & I-can this be safe?

I went totally crazy at my company picnic and made a fool of myself, showing how needy I am. I still feel horrible about it. I made a big scene and this male coworker saw some of this mess. For the last few months we have been emailing each other pretty regularly in a subtly flirtacious way and sometimes instant messaging I've come to rely upon him for my excitement for the day & how attentive he is towards me. He seems to feel the same way. After the picnic, I thought I had lost his friendship for good, but if anything this has caused him to email me more often and he seems to even be in awe of how gutsy I was to tell people how I felt about myself & my coworkers at the picnic. A lot of my other coworkers were embarred for me, but not him. This has helped me cope with my own embarrment by being so accepting of me. I've previously shunned him at times, worried we were becoming too close, but then we're back to square one. Is this safe to keep up this needy friendship?