1. You’re happiest when you’re together.
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/tumblr_m2whgvn6yh1qcip3vo1_500.gif)
2. The story of how the two of you met is seriously the cutest.
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/nice-to-mmet-you.gif)
3. One of you is extremely romantic.
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/gif1marshallbyitsaishah.gif)
4. While the other is a little more cynical.
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/tumblr_m5b1rrqarv1r26seao1_500.gif)
5. Your sass doubles when you’re around each other.
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/tumblr_nexyzemwkc1s46wyqo1_500.gif)
6. Your dirty talk is off. the. hook.
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/tumblr_mtv2z6pdfh1sj62f0o6_250.gif)
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/tumblr_mtv2z6pdfh1sj62f0o4_250.gif)
7. You’re so in sync with each other, you don’t even have to look at each other to know what they’re thinking.
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/tumblr_n8gp2y6iqm1sph8ueo8_400.gif)
8. It’s impossible for either of you to hide anything from each other.
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/tumblr_lusdq194qp1qz7uzr.gif)
9. Your adorableness is the life of every party.
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/tumblr_mkbawopctw1qkpeuro1_250.gif)
10. You’ve eliminated all illusions that you have any boundaries left.
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/tumblr_mnpoyyrvcn1qiw3poo6_500.gif)
11. You’re starting to become one person.
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/tumblr_mnpoyyrvcn1qiw3poo5_500.gif)
12. If someone pisses one of you off, they’re pissing both of you off.
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/giphy20.gif)
13. When you’re fighting, you both know exactly which punches to throw to make the most damage.
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/tumblr_mlzaqbqihe1s3h2s8o5_r1_250.gif)
14. But no matter how bad the fight is, you manage to make up.
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/anigif_enhanced-975-1411531824-11.gif)
15. You never run out of things to talk about.
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/tumblr_m19ptdg72i1r6f6deo1_500.gif)
Never.
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/tumblr_muv13gvnqm1st40jro1_500.gif)
16. All your friends consider you one single unit.
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/mcbv9c.gif)
17. You’re not afraid to be vulnerable around one another.
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/tumblr_inline_nckivycdva1rs685u.gif)
18. Because at the end of the day, you’re best friends.
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/tumblr_mfzzrlfkzs1qctc04o8_r1_250.gif)
19. And if anyone tries to say their relationship is cuter than yours, well…
![How I Met Your Mother](https://thoughtcatalog.com/wp-content/uploads/2015/03/re-marshmallow-lily-pad-bitch-well-miss-them-so-much.gif)
thumbnail image – How I Met Your Mother