Don't know how I should feel..

I hopped on Tinder for about 2 days because I haven't talked to a guy who I would be interested in lately. This one guy who I went to high school with seemed interested in me for 3 days and then he didn't get ahold of me the next day so I messaged him and the conversation was like 5 messages. I know it has been a very short amount of time but I start liking/enjoying talking to them right away.. it is just my personalitiy and I am only with it.. I don't fall head over heels I just mean I look forward to talking to them.

I got emotional last night and just felt like why do people do that.. Show interest and then just give up so easily when we haven't even hung out. I haven't heard from him today and don't want to message because I did that last night and didn't get a good vibe from the situation. This morning when I woke up I felt like I don't want to try to invest in a man who I don't feel like he is truly interested in me. And my feelings have been blah and maybe a bit let down.. I do not like feeling this way because it continues for days and days.. My mental health today is not as lively as I normally am. I get hopeful and then let down..

I guess I just want some advice or information on what I should do or how I can just not look at talking to a man as a potential relationship probably because I want one..

I only want supportive help. Please do not tell me I shouldn't feel some type of way..