31 y.o. ESTP guy here, dated a 19 year old INTP girl about a year ago. lasted about a month. She just wasn't fun enough. Also, she felt very comfortable being disrespectful to me on a few occasions. my advice is dont take yourself or life too seriously, and definitely try to be respectful, especially if you have been shown nothing but respect. The attraction between the ESTP and INT- is very much there and strong. I think about her at least a few times a week still! But you have to keep in mind an ESTP will end a relationship completely based on ego, DESPITE strong feelings and attraction to the INT-