You dated for a month, two, everything was going perfectly, and suddenly - silence. He doesn't call, doesn't write, disappeared like a ghost. The first thought: "What did I do wrong?"
Well, no. Most often, it's not about you. Maybe he was just scared. Not of your shortcomings, but of his feelings.
Some people run from intimacy because they fear losing control.

Others suddenly realize they are ready for something serious and sabotage the relationship to see if you will "save" them.
Another possibility: he thinks you're too good for him and is withdrawing to avoid future disappointment. Sounds absurd? But that's how human psychology works.
Of course, there are also less romantic reasons: a new project at work, family problems, or banal fatigue.
But if a person really wants to be with you, they will find a way to let you know. And if not, is it worth wasting your nerves on someone who can't even dial a number?
Let's figure out how to act. First: don't chase. A hundred messages of "where are you?" or "let's talk" will only push away.
Instead, take care of yourself. Go to a workout, meet up with your girlfriends, watch a TV show. If he comes back, you'll be emotionally stable. If not, you'll have already moved on.
Second, analyze whether there were any red flags. For example, he avoided talking about the future or criticized your hobbies.
Perhaps his disappearance was a gift that freed you from a toxic relationship.
Third: Don't blame yourself. Even if you made a mistake, an adult will discuss it, not run away. His silence does not speak of your "insufficiency", but of his immaturity.
And lastly, don't be afraid to close the door. If after a week of silence he texts "I miss you", don't rush into his arms.
Ask directly: “What happened?” If the answers are vague - “I was busy”, “I couldn’t” - this is a signal.
Serious relationships are built on respect, not on games of hide and seek.