You think about them often without trying to
You look forward to talking to them
Their messages or presence make you feel happy
You care about their opinions and feelings
You want to know more about them
You notice small details about them
You miss them when they are not around
You feel nervous or excited around them
You want to spend time with them
You make an effort to look good for them
You feel comfortable being yourself with them
You want good things for them even if it does not benefit you
You get jealous sometimes, but still respect them
You imagine a future with them
You are interested in them even when nothing exciting is happening
You feel drawn to them in a way that is different from other people
You remember things they said or did
You care whether they like you back
You are willing to make time for them
You feel a strong urge to be close to them