Your communication frequency has suddenly increased
You suddenly start to feel jealousy when he/she started loving the company of others.
Your body language evolves like, you lean on his shoulder, feel different, or tend to sit or stand closer together than before.
If you both single, there is a more possibility of falling in love with each other.
You two start flirting with each other which is another subtle sign.
You feel like your friend is turning hot and cold toward you
Conversations between you suddenly become very long
Whenever something happens, you need to notify them right away
The two of you try to spend time alone together