Is it possible that vitamin D supplements increase testosterone?

I (26,M) have been taking vitamin D supplements (3000IU/D) for about 3 months now after discovering I was highly deficient (13nmol/L).

Overall it brought me a lot of benefits and I have become a completely different person. I have more energy, I became less grumpy, and I have a way more positive outlook on life in general.

One thing that kind of interests me is the fact that it seems like my testosterone increased or something. I've become way more dominant and assertive the last few weeks, and I'm less willing to put up with others crap. I also seem to enjoy "exerting power" way more, whether it be in the gym or me simply slapping my fists together. I also seem to have way more "interest" in the opposite sex and - honestly - became a bit of a slut this weekend.

I did read something about how vitamin D is also partly responsible for testosterone, dopamine and serotonin. Could it be that this is just the result of achieving a "normal" vitamin D level?