Girls, how to hide your period from your BF?

I know this is a silly question, but at the moment I'm freaking out just a little. I haven't seen my boyfriend in person for two or three weeks now but today he's coming over to watch movies with me. And of course, I started my period this morning.
My boyfriend is a handsy guy, especially when it comes to my butt. And so, I think it would be a major turn off or just kind of "ewww" response if he felt my pad through my shorts. I'm going to put a tampon in, but since it's my day 1 and usually pretty heavy, I need some extra tips on how to not bleed through, but not crinkle and have pad lines.

Thanks Girlies!
Girls, how to hide your period from your BF?
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