Whenever I orgasm, its very sticky and my boyfriend & I end up having to use a ton of lube. Why is this happening? It happens every time.

See an OB/GYN. Without examining you would only be guessing. Different individuals have different physiologic responses to orgasm. Some women have large discharge of thin liquid, some no appreciable discharge, and you may just be on the other end of the spectrum. If this is disturbing, go and get examined and perhaps a reason can be found.