Over the years I have had some male friends/admirers who are interested in me romantically but are introverts. I am an introvert too but I am confident. We will get on well and flirt but something holds them back from taking it further. It frustrates me as I know some of these guys use dating sites so they will interact with me in person but are back on the dating sites a few days later. I just find it offensive as though I am second best if they are looking elsewhere but not good enough to take things further with. I know they are interested as sometimes their friends will go behind their back and tell me. Most men always tell me how great I am and don't understand why I am single. I am quite pretty which I know can intimidate some of them as they cannot look me in the eye. What is the solution to all of this?