That warm tingly feeling "down there"

Sydney
I noticed that I don't really get that warm tingly feeling down there like I used to when I was younger. I mean I'm not old or anything lol. I'm 21 right now, and when I was younger, maybe like the age 12-16, when I would sext with a guy, kiss a guy or read something dirty I'd get that warm tingly feeling down there and be turned on and wet. But now when I read dirty things or kiss my boyfriend I don't always get that! Idk if you know what I mean or not haha. And it's not like I don't love my boyfriend or something because I know I do :p
And I mean it's not a big problem cause I mean I still get horny and wanna have sex, and I have orgasms but I miss getting that tingly feeling down there just from a kiss! 
Anyone else feel this way? How can I get it back?! 
The only way I notice it happens if I'm high from weed (no judgment please haha) and I get turned on really easily just from kissing and get that tingly feeling down there. Haha but yeah!
I want to sext with my boyfriend to see if I still get it, but I don't think he's into that stuff lol.