1. You cannot imagine a life without him/her.
Life without him/her would be nothing less than living in hell. S/he is your entire world. Your happiness, your sadness, and everything else related to them.
If s/he is going to hell, you will be happy to go with them. Not literally, though.
If this is the case, s/he is your better half and, therefore, qualify as your Soulmate.
2. Your relationship is unbreakable
There are fewer flaws in your relationship. You both understand each other so well that almost no doubt will come in your way. Thus, making the relationship unbreakable at present.
Others might even be asking you stupid questions like – how are you both so close? However, they just envy you. Make sure no outsider can shatter your belief in your partner.
3. You understand each other
Of course, no one is perfect at first. However, with time you both can comprehend each other and that too, perfectly. You know each other without filters and are comfortable.
What more can you ask other than a partner who knows you more than yourself and still loves you unconditionally?
You always feel free to be yourself in front of your partner.
Moreover, you will never be afraid to talk about anything and everything. It won’t even make you feel nervous or embarrassed.
4. You never think about someone else.
You never think if your relationship is a mistake, or if you could have a better relationship with that new girl you met yesterday.
Remember point #1, you can’t imagine a day without them, how can you even think about a relationship with someone else.
5. They made you a better person.
Whether you believe it or not, if s/he is your soulmate, s/he would have changed something in you for good. They pushed you for better… they encouraged you to pursue your dreams.
They don’t only ignite the spark in you but also lend a shoulder to cry on, a hand to hold, and few encouraging words when life gets hard.
If you can relate all these with your partner, s/he is your soulmate.