Why do guys loose intrest on a girl they waited for a year for a girl to be impressed?

there is this guy on whom i had a crush on for many years , who confessed me after my break up with my ex ( he is a good friend of my ex) . it took me years to move on form my ex and he waited for me for almost a year and he tried his best to impress me. and now when i started expressing my feelings towards him, he kinda ignores and say things to make me jealous , its been 2 weeks since he started ignoring me and acting weird does this signify tht he lost intrest and is bored of me when i started expressing my feelings

Why do guys loose intrest on a girl they waited for a year for a girl to be impressed?
Post Opinion