how can one know that he is really in love?

its simple their body language and it is easy way to fine and know about the love or about the attraction' you just guess it... see it... feel it... and find it.... bye for now......

nothing have 2 do , just don think about love n if u feel after that any feeling it means u e in love.

if you cant imagine living without the other person, or it hurts you to think they might be hurt somehow...then your probably in love. however..knowing if the other person really loves you or not, is pretty much a decision of faith. do they treat you right, worry about you, enjoy spending time with you - no matter what your doing? have they told you they love you?