Mickey proposed specific things:

1. See a therapist
2. Read books about it
3. Focus on yourself
4. Work on yourself

Yes she has certain style of writing. You don’t have to like what people post or their style of writing. But being rude to people is against forum’s guidelines. It’s uncalled for

As about advice. You are only 18. You just now became an adult. You said you have “never” been in a relationship, but when would you even have time to really be in relationships? In your childhood?

It’s not uncommon to not date in your age. You could focus on education and building work skills and creating a life long career for yourself, improving your mental and physical health, making friends, finding hobbies etc You have many years ahead of you for romance.

I’d not worry about others kissing, who knows if they are in good relationships. Many people couple up only because they don’t want to be alone or don’t know how to be alone.. So id not assume they are actually happy. Some are and some aren’t

So I second Mickeys advice: focus on your own life and bettering yourself and talk to your doctor if you can get some therapy for yourself. It could be helpful