When a guys says he loves u do they mean it?

No, not unless it's done properly. When a man says that romantically, run. Run away and take a cab home, if necessary. If he does not set the standard of no sex, then run especially fast.

Anyone can say "I love you" and not mean it.

Nope anybody can tell you they love you and not mean it one bit. Remember actions speak louder than words.

depends on the tone

depends what they want

some do and some dont ---- you need to look at their actions not their words

Trying..