MMOsite writes: Valentine's Day is coming, what's your plan on that day? Although it's indeed not a good idea if you still want to stay at home on such romantic day, as a big fan of online games, MMO Game is a special lover in our life! So how could we abandon it and go out on a date with others? But if you say 'I will have a date with my girlfriend/boyfriend', how about selecting the dating place in games? Online games become more and more friendly: dating system, couple/marriage system, even same sex marriage, and there are all kinds of Valentine's Day events, it's a nice dating place for gamers without doubt. You don't need to worry about 'It might be boring' or 'I don't know what to do in games', just follow us, in PART I we will show you the MMORPGs which have marriage or dating system, and the features of the system in different games; in PART II, let's imagine what if the systems happen in other genres of games? Such as FPS, Battle Arena. Let's GO!