Advice to feel less lonely after getting dumped

[Yoan]

I have always felt lonely even before I met my bf, I didn't have many friends and I usually got bored and tried to talk to strangers online or just try to entertain myself with movies or TV or YouTube, but after my bf broke up with me the loneliness hit me like no other. This once, I have a comparison as to how happy and unlonesome I can be. Especially on Sundays, I don't know why, but I miss him a lot. A whole lot.

Any advice?