I lack any desire to interact with females especially on a romantic or ual level including flirting?

this has been so for little over a year. im still attracted to certain females yet lack the justification for lack of a better word to move on these attractions. females send me signals or make moves regularly that i would have acted on in the past yet i cant muster the juice to do it anymore. im only 20 years old, fit, and have heard ladies talk about me being attractive recently yet it doesnt seem to bolster my attitude or i geuss confidence. havent had a problem in the past with this. the last 3 or so girls i became "involved" with like came on super strong and talked alot about wanting to settle down or whispered weird things early in the relationship about love, and i could never bring myself to respond. like i dont know if i have become uninterested in the female phych, scared of attachment or what? any advice, guidance, or whatever would be appreciated...