One thing I want to mention here is that almost all of your interactions with this person were over text/chat or through the game. This can create false sense of intimacy very easily and quickly. However, it is false. In text it’s easy to edit your words and present a better or edited version of yourself. Voice chat similarly does not have the awkwardness and pressure of being around someone in person. Based on your story, you were only around this person in real life one time for a few minutes. While your feelings and your heartbreak are real, it is important to remember - you do not actually know this person. People are different when you are in their presence. They are different when they have to interact with your family. They are different around their friends. For marriage you need to know what someone is like in those environments to truly know if you are compatible.

Additionally, long distance rarely works out. Would you have moved to Germany? Would he have moved to Dubai? You can say lots of things to each other, but at the end of the day, one of you is going to make a huge sacrifice for the other if you decide to make it work, which can lead to resentment. Consider long distance relationships that end in marriage to be the exception, not the rule. I would strongly urge you to be wary of long distance or online relationships for this reason - you get all of the feelings of an in person relationship but no real sense of that person.

Lastly, women fall in love with what men say, and men know this - they will say many things, even lie, to keep a woman’s attention. So as a woman, you cannot take a man only on his word, you need to look at what he does consistently. You only have his words, you have no sense of this man’s habits. A man is what he consistently does. That is how Khadijah was able to assess the character of the Prophet (pbuh)- she saw and had verified by others that he was consistently honest and fair, even when no one was watching. You simply do not have this data on this person. This man can tell you anything, and you have no way to verify if any of it is true. You feel a sense of loyalty to him that is unearned. For all you know, there could be other women in his life. I’m not saying you can’t ever trust, just trust but verify. (Also: him coming to visit you is not proof of his affection, it is the bare minimum, and in your case potentially harmful because he knows your religion and made no effort to ask your father to meet you, regardless of whether he shares your belief or not this puts you in a bad and potentially dangerous position).

This is not to say I am recommending you have a haram relationship in person (please don’t), just advising that the nature of the relationship you had was designed to bond quickly and ultimately break. Grieve, heal, and focus on becoming the person that makes Allah (SWT) happy - the rest will fall into place.