I'm not on HRT but just by allowing myself to feel my feelings and being more connected with them as I explore my gender identity has resulted in a similar effect. I'm far more emotional now than I was before. I went to see Rogue One with my family and there is a scene right at the end that got me teared up. Like you said, a few months ago, that would have never happened. I'm sure if I end up introducing new hormones to the mix that will get even worse.