Since the first caveman took a long look at a cavewoman painting on the wall and felt a twinge in his heart, guys have been trying to pin down the concept of love. In the words of legendary martial artist and apparent poet Bruce Lee, "Love is like a friendship caught on fire." Meeting that special someone is quite different than using Tinder for a date or attempting to breach into the big group of girls dancing at the club.

Times change, cultures change, feelings don't. You'd think we would have figured it out by now, but every time us guys feel our stomach drop watching her flip her hair and laugh, we're right back at square one with our buddy Longtooth (or whatever he was called. Stan?)

But not to worry, we're here to help. If you relate to a few of these signs, maybe it's time to pick up that phone and give her a call. It's that simple.

1. She's More Beautiful Than Everybody Else

Whether you admit it or not, appearance always matters. Our favourite playwright Billy Shakespeare taught us that "Beauty is in the eye of the beholder". That means everyone's tastes vary, everybody wins.

The first sign comes when you can't take your eyes off of her. All the other ladies are plain invisible. It doesn't mean it's time to buy a place together, but it's a start in the right direction.

2. You're Actually Listening

She has interesting things to say. Not necessarily about her cuticles or that bargain at H&M, (your latest achievement in Call of Duty might not be topical either), but about whatever you both have in common.

You're enjoying it too. There's a discourse between the two of you and you both feel comfortable enough to be open about your opinions and thoughts.

3. Every Time Something Interesting Happens You Need To Tell Her

Did you see something funny on the way to work? Maybe your friend just fell off the karaoke stage in the middle of his rendition of Chop Suey! Regardless, the overwhelming urge to whip out your cellphone like a gunslinger and shoot her an update is a clue. Is it because what's going on around you is that interesting, or is it because you just want to talk to her again?

4. The Little Moments Matter

The simple act of lounging and watching the sky, so basically not doing anything, is thrilling. Sometimes the smaller things trump the snazzy three course meal on King Street West.

Maybe, instead of getting tanked with your buddies on a Saturday night, you opt to instead go over to her place and see what's up on cable. You end up watching something silly like America's Funniest Home Videos (or 1000 ways to die, for the more cynical folks) and spend the evening laughing at pretty much everything. But lets be real, that grin on your face isn't coming from the television.

5. She Texts You Back And...

You feel like a boss. Obviously you react stoically, and you wait at least an half hour before responding...because it's no big deal.

Truthfully, you're jumping up and down, fist pumping, and air guitaring because that beautiful girl wrote you back. It literally feels like you went to the moon and back successfully and within moments. You just won the Tour De France. You got the game winning goal in overtime. Basically, the minute she writes you back, it is the most exciting moment of your life.

6. You Become An Artist

Suddenly, poetry and music makes sense. You have a muse to write about and to express yourself to. It doesn't matter if you haven't played the guitar since elementary school. You're there sitting with your axe putting together the best song on earth to woo her off her feet and directly into your arms. Now, how does November Rain start?

7. All Your Friends Know About Her

It becomes hard to keep it low key, and it isn't long before everybody knows. Odds are they've put two and two together way before you did as you go on talking and talking. They'll listen to you for a while, and probably laugh behind your back. But that's what friends are for, right?

8. You Are Willing To Overcome Obstacles

You live in Toronto but she's up in Guelph? No problem. Oh, she has an exchange semester in Europe? Well, it's time to reinstall Skype. You fell for a reanimated human being and have a choice between joining her in the underworld or move on? Easy.

Sometimes life throws you a curveball, but if you're in love.... then you're up to bat. Holding on and trying to make things work is not foolproof, but it speaks volumes about what's going on in your head.

If any of these signs have significance, dust-off your cleats and step up to home plate. It's go time.