Guys: if you say "i'll ttyl =)" do you really literally mean it or is it just a way of exiting the convo?

Anonymous
I was texting my guy friend last night...i'm sorta getting the feeling he might like me-i know he did for awhile but then in January he became convinced I liked someone else, so I am unsure of where he is since then...anyways, I said "well ok...i should go now I have to do dishes" and he said "ok I'll ttyl =)" did he mean it literally like he wanted to talk later? oh and I know I'm way over analyzing this haha
Guys: if you say "i'll ttyl =)" do you really literally mean it or is it just a way of exiting the convo?
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