I put myself out there today and told him how I feel again and that I feel like he’s sending me mixed signals.
I would have done what you did -- ask for clarification.
There have been times in my dating life where I wanted light/casual and other times when I wanted more. I've always stated up front what I want currently looking for. It startled some people I dated, but it made my dating life a WHOLE lot easier.
To me you sound like you are not interested in light/casual stuff. And this is fine, sometimes one person wants light weight and another wants more serious.
I no longer ask open ended questions like "I feel like you are sending me mixed signals. What's up?" It opens the door for more evasiveness and non-answers like "I don’t know what to say so I won’t say anything at all."
I value up front-ness, I dislike passive aggressive, or shut-me-out-from-emotions stuff. BTDT already in past relationships so not up for more.
I would ask a more direct "I feel like you are sending me mixed signals. Tell me plainly what it is you are looking for... is it...
a) You aren't sure what you are looking for and are trying to figure it out.
b) You are looking for a "friends with benefits" situation only
c) B, with the possibility of more serious later (with time estimate -- ex: Friends with benefits til I get out of school because then I can be more serious, etc)
D) A serious relationship now
Then I could move on from there with some kind of clarity.