You can have multiple email address of your existing gmail account just add "+" symbol after your user name then add anything followed by @gmail.com. Read the example below for better understanding.

My gmail id is , Suppose I have three friends meena, teena, veena and if they ask for my email address then I tell them its rishi+ , rishiforu+ and rishiforu+ .

When they send me at this address it first goes to gmail server where it recognize it as and avoids “+” sign and anything after it. So any mail send to rishi+ come in my inbox.

So If you have Boyfriend/Girlfriend tell him/her email your email id as yourmail+
Note: TO check your mail you have to login as that is in my case without “+” sign.