This article gives good tips on how to date when looking for a serious relationship;
"There are clearly differences in dating between dating for fun or so you won’t be bored or feel lonely, versus dating to find someone that could lead to something a lot more serious.
The first difference is in who you choose to go on a date with in the first place. For example, there’s not much point in agreeing to go on a date with someone you already know and would never consider as someone you’d like to build a serious relationship with.
Also, there is not much point in saying yes to someone that asks you out, if you realize that there is absolutely no chemistry between the two of you.
On the other hand, if you’re sure you want to find someone for a long term relationship, than it’s a good idea to pursue options that give you a better chance of doing so...."
http://www.helium.com/items/1826498-how-to-date-if-youre-looking-for-a-relationship
Source: Helium.com