#15 Be gentlemanly. If you want to know how to flirt with your girlfriend the classy way, forget being the cheeky chappie. Instead why not try being a good, old-fashioned gentleman type?
#16 Leave notes. Leaving cute post-it notes around the house or even just writing a message in the steamy bathroom mirror is a super cute way of flirting with your girlfriend.
#17 Make her laugh. Never underestimate how effective humor is when it comes to getting that flirty spark back in your relationship.