When I’m used on dating apps, love only lasts a night. When I’m used by an author, many are drawn to their story. When I’m used in sea, I can feed many. What am I?

I build up castles, I tear down mountains, I make some men blind, I help others to see. What am I?

I am full of pasta of many types, though to my small stature I gripe. I am denser than I appear, so stay far and stay clear, no trip’s worth my deadly hype.

I have a head, but no eyes Four legs, but only one foot. I’m a sight for sore eyes But when in use, I’m rarely seen.

I am a four-legged best friend who will never let you fall. I’ll be waiting for you, but I cannot answer your call. I’ve got your back, so long as you don’t have too many snacks.