A broken heart

It's been 3 years for me since I last shared a romantic relationship with someone whom I considered my one and only true love. That relationship ended with her cheating on me with another young man; "Don't worry about him he's just a friend". I've done alot for myself these past few years, got a great job, lost loads of weight, and im more in control of my emotions. The problem being is I'm alone, not like I don't have friends or family to call on; but alone in the sense that I can't find someone to love once more. I live in a one bedroom apartment, go to work all the time and don't have any hobbies that take me outside of the house other than weightlifting, fishing, and hiking. All of which don't require much socialization. I consider myself to be a respectable hardworking individual, not the most attractive physically but definitely not ugly. I have confidence in myself to reach career/personal goals. But when it comes to even talking to a female I find attractive I just can't. I develop a sort of fantasy in my head I try to push away telling myself negative things not only about myself but the other party. Assuming they are just as bad as the women who've hurt me in the past. I am aware this is unhealthy and only achieves the exact opposite of what I desire. Women rarely talk to me, I have RBF and im a grizzly 6'1 215 pounds. I'd be the last man in the room you'd expect to be a crybaby but im here in the flesh. The only way I've been able to remotely communicate is through eye contact. The idea of walking up to a total stranger and just complimenting them or asking a random question for small talk just terrifies me to the core. I always think they'd reject me or think I'm a weirdo because I don't have true confidence. It's all a front. I really need an understanding soul to help guide me back into the saddle. I dont want to live my life like this. I really adore children and hope to have some of my own one day with a woman im comfortable represents my idea of the ideal mother. But when you've lost all game, and don't have the will to flirt or even chase where do you start? Online dating is a joke, its all swipes and its much more nerve racking with no idea what to say to a person on a screen. I'm 22 and I feel like an alien. These are supposed to be some of my best years where I am able to conquer any feat. I just can't stop loving so damn hard.