Heya heya, very plain and simple imo but figured it's a pretty important to remember!
Be sure not to lead anyone on if you really don't see anything building between ya; let that person down as easy as you can out of respect for their time!
As for being rejected, just reverse engineer that sentence above. Accept that there isn't anything there to build on, pay some respect to yourself and your time, and carry on!
I get that there are more layers to it all but try not to take it too seriously, y'know? Dating is supposed to be fun so be sure to keep spirits high!
Thanks for your time and G'luck!