@Connie71c I wouldn’t say it’s pathetic but being sad often about missing him does turn unhealthy because often people start to linger in sadness and it will have a real impact on their mental health.
Missing someone before and after you’ve actually met them is very different. Doesn’t mean your feelings were any less real before but there is a stronger emotional connection as you’ve met now.
What you could try is keeping yourself busy with a job, hobby or friends, something you enjoy, so you have less time to think about it.
Or
Meet up more often, which isn’t always possible but it could be beneficial to the situation.
If you keep being sad for another long time I would honestly doubt that long distance is doable for you, how harsh it might sound because I am aware you love him. But love isn’t always enough.
I am in a LD relationship as well and of course I miss him but it’s not a reason to feel down - instead you should feel blessed it’s even possible to do long distance with current technology as you can still communicate almost instantly.