Time drags when i talk on the phone with my gf.when i would talk to my ex?

time FLEW by. like it would seem we would be talking for 20 mins and 2 hrs passed. with my gf now its the opposite. seems like weve been talking for hours and its been 30 mins. its like non stop talking. the longest we go without talking is like 2 or 3 seconds. does this mean anything?