Sometimes I Feel So Lonely

Then I just want to listen to some appropriate music. Like these. That's all I ask of you.

This version is by Sarah Brightman and Michael Ball (the best Marius EVER in Les Mis). I'm sorry I could not find a good one with Sarah Brightman and Michael Crawford. They are the by far best performing this sad but oh so beautiful lovesong. Say what you like about Andrew Lloyd Webber, this song is fabulous!
Afterwards one can cool off by listening to The Music of The Night! Michael Crawford is by far the best Phantom if you ask me.

And if you really want to dwell in sadness here is one for desert:
(from Les Miserables)
Sniff. Have to go to bed.