I [19M] think I might use "the L word (Love)" too early due to my use of it with family and friends

Feel free to look at my previous post to have a better idea of my situation (not related to "the L word"):

https://dg.reddit.com/r/relationships/comments/502dso/i_19m_have_always_wavered_on_the_side_of_caution/

So I tend to use "the L word" very freely, if I am saying how great my group of friends are I might say "aww I love you guys", same with family.

I haven't ever said it to a girl (because I have never even got as much as a kiss), so I feel that when I do go a bit further with a girl I might scare them a little bit if I say it too early.

Or is it just r/relationships being a little extreme? I always see you saying "you can't love anyone before you have been with them for 6 months" is what I read in another thread.

And in the case that I do accidentally say it too early and they get a tiny bit uncomfortable with that ... I need a way to back out or explain it ... so help with that would be nice too.

My plan of action would just be to explain what I just explained in this post but it might not be enough or may not solve their uncomfortableness.

I feel I missed the teenage "puppy love" stage and it might fuck me over :(

Any opinions or advice or stories? I might just be worrying about nothing :S

Thanks is advance, I appreciate your time!

tl;dr worried about using the L word with a girl in the future because I use it very freely in non-romantic relationships