How do you know if he is serious about you?

Answer 1

well when you talk (not saying it will always happen ) he might look into your eyes during the whole talk also he might go near you a bit so your like 30 cm away or something like that and yeah if its high school if you do a talk like how fast does the earth go ? and talks about it , he could look into you eye 50 or 60 % not 100% because every body will notice and if university then that 2 things at the top should tell

you good luck!