Guys, how do you show feelings to girls and I miss ya meaning?

Anonymous
A guy I'm into sent me my stuff I left when I visited with him. With the stuff had a little note and at the end of the not it said anyway... MISS YA in big letters. Not sure if guys would write that if they didn't miss you or what? He initiated flirting with me and then I visited and had an amazing week. He treated me like girlfriend etc but isn't ready for anything. He was cheated on and doesn't trust. Could be distance and unsurness bc of trust not sure. Would you write that if it wasn't true that you didn't miss someone and the way guys treat you how to tell if something really there?
Guys, how do you show feelings to girls and I miss ya meaning?
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