Hi I want to no if guys get as invested in relationships as what girls do? I am under the impression that more mature and older guys do, but guys my age(19) are just in it for one thing. Is this the case?

It depends of the person's personality. Every body is different.

Guys who are young definitely don't get as invested as girls. But as they get older they definitely do get more invested and probably this is the reason more girls leave guys as they get older cause the guy invests more and then she realises he may not be the one so he tries harder and then his out. Yet at a younger age the guy spends more time with friends and does not care as much and the girl invests more...

Depends what type of person they are. I invested everything in my ex relationship, look where it got me :P here!

The more you invest, the higher your gains, and the higher your losses.

Just read some of the posts on this forum, and you find that a lot of guys invest a lot of themselves in relationships.