A big deal

Is it a big deal when some one tells you 'I love you'?
I was already wondering when were you gonna say or wether I should say it.
But I am afraid that if I say it you'll ask me do I know the meaning of love?
And I'm not even sure that I am capable of it.
But 15/1/2016 you said it.
It felt different. It took me by surprise.
But I was happy to hear it. 
And does this mean that our relationship is getting to another level?
I am afraid to let you know I'll never leave, cause incase you start to neglect and take things lightly.
But I don't wanna give you the impression that I'm gonna leave incase you hold back the things that you can give me and in another words not giving me all you got, but I'll be giving you all that I have.  And that won't seem fair doesn't it? But one thing I cannot accept is that everything is all mixed up, there is no clear line separating it.