If you haven't yet slept together and he says I love you, watch out. It could be a ploy to get you into bed. More: 5 Ways men say 'I love you' without actually saying it. A man may say 'I love you' during sex, or to obtain sex, but don't necessarily think he really thought it through or means it, warns Tessina.
http://www.sheknows.com/love-and-sex/articles/1076549/how-soon-should-he-say-i-love-you
Telling someone you love them on the second date or second week is ridiculous. It's daft – and that's what they'll think you are if you do it. To avoid a false reply, Tracey says you should never say 'I love you' before or after sex. You don't really love someone after three months. The fact is, the first time anyone says, 'I love you,' they usually don't.Not really.
http://www.dailymail.co.uk/femail/article-2701568/When-right-time-say-I-love-Too-early-look-desperate-late-miss-magic-maybe-Cheryl-held-off.html
Do not use the words I love you to cover up something you did wrong, or to resolve a conflict. Learn to apologize. If someone you care about tells you they love you, tell them exactly how you feel and be honest and sincere. Don't just say, Awe, how sweet, that sends the wrong message.
http://www.wikihow.com/Say-%22I-Love-You%22
You should say I love you when you feel it. Some people are worried about scaring off the other person. But you will not know how the other person feels unless you say it. You say it when you feel it, and not because the other person said it. When you say it make sure the moment feels right and the timing is right. The two of you are alone together.
http://www.answers.com/Q/How_long_into_a_relationship_before_someone_should_say_I_love_you
Say I love you in another language. Write it into a poem or even a haiku. If you want to be romantic, spell it out with rose petals on the bedroom floor. Write it in code, like a Vigènere cipher. Say it in little ways, like post-it notes in unexpected places, and express it in every way you can.
http://www.wikihow.com/Say-%22I-Love-You%22
Any time before you've spent time together and gotten to know each other is way too soon for either of you to say 'I love you,' says Tessina. There's no way either of you can know. I believe 'love at first sight' is only in hindsight.. More: 7 Signs he's really, truly the one.
http://www.sheknows.com/love-and-sex/articles/1076549/how-soon-should-he-say-i-love-you
Well, it is early, but completely acceptable. The ideal time to say ‘I love you’ would be a couple of months. Wait for two months if you can hold your emotions in and try to figure the direction of the relationship. If you still love every moment you spend with your date, perhaps it’s time to take the plunge.
http://www.lovepanky.com/love-couch/sweet-love/when-should-you-say-i-love-you-first-time
That's not to say you can't feel 'in love' after three months of heavy dating, and it probably is acceptable to trot it out then. But for absolute maximum impact, I'd wait six. I know - hard core - but if someone says, 'I love you,' after you've dated for six months, they've thought long and hard about it.
http://www.dailymail.co.uk/femail/article-2701568/When-right-time-say-I-love-Too-early-look-desperate-late-miss-magic-maybe-Cheryl-held-off.html
Take your time, build the romance and say it at the right moment. Saying I love you for the first time. Here are 10 tips you need to keep in mind before saying ‘I love you’ for the first time. It’ll make the whole loving revelation much more smoother and meaningful.
http://www.lovepanky.com/love-couch/sweet-love/when-should-you-say-i-love-you-first-time
Of course, there are always exceptions if you've been spending every waking minute together vs. only seeing each other once or twice a week. But in general, if your guy tells you he loves you before you've been dating for three to six months, he could be mistaking love for something else. I'm a big believer in time.
http://www.sheknows.com/love-and-sex/articles/1076549/how-soon-should-he-say-i-love-you
how long before you say i love you to someone
You can say i love you to someone before two months . You say I love you to someone before two months.