I'd say first and foremost, see if you can find a counselor who you can bounce ideas off of. They can be the absolute best in helping you go through with changes you want, and helping you figure out how to do those.

The fact that you might like some feminine things is perfectly fine, but don't let that convince you that you can't be a man if you decide to be one. I know cis men who range from badass punch-a-bear-in-the-face mountain men (Lived in Alaska, I'm being literal. Also it was a black bear not a grizzly. ) to guys who were obsessed with fashion, romance movies, bright colors and all things cute or pretty.
And as far as your boyfriend goes, if he's being honest then it sounds like he'll be there for you even if you did transition. I know plenty of trans men and women who've been with the same person before and after their transition. So even if they identify as straight, there's a lot of factors that go into labels like straight, gay, bisexual, pansexual, etc.
And if you don't want to take T, then don't do it!

It's that simple. Do only what makes YOU comfortable with yourself. There's no one right way to be part of this community.

Best of luck, Tommy! And I hope you enjoy your stay