Let's face it. There are some people that are hard to forget, hard to move on from. Time and distance may get the best of you, new relationships may begin and may end, but that person still sticks to the corners of your mind. You might not want to admit it, but there's a chance that you're not really over that person at all, even if you've moved on.

1. You get butterflies when you see them.

Whether you see a photo of them on social media, a text they send, or in person, you can't help but feel that feeling of butterflies in your stomach.

2. You compare them to everyone else.

Every person you're with has to pass the test of whether they match up to that person. And you'll find that they likely never do.

3. You can't delete the photos.

You'll probably try to make up excuses for why they're keeping the photos of you two, but you know the truth.

4. Everything reminds you of them.

You somehow find that person in everything you see and do. Everything in life becomes a reference to some joke you both shared, some conversation you once had.

5. You stalk them on social media.

You see they changed their profile picture and before you know it you're three years deep into pictures they're tagged in, not knowing why you're falling down this rabbit hole.

6. You find any excuse to start a conversation.

Maybe it's commenting on a photo, talking to them in a class or a work setting, or texting them out of the blue when you remember something about them or your time together. You will probably keep these conversations friendly, hidden under a facade of friendship. But you know how you feel, and you know these conversations feed the remnants of your love for that person.

7. You post things with them in mind.

You find yourself posting photos thinking about what they'll think when they see it.

8. You're upset when you see them with someone else.

No matter how long it's been, it's always hard.