The meaning here is, that we should seek our happiness in God - in his being, his perfections, his friendship, his love.And he shall give thee the desires of thine heart - literally, the "askings," or the "requests" of thy heart. What you really "desire" will be granted to you. That is,See, the trouble with using just this one verse it that it totally leaves out the greater meaning of that text...
(a) the fact that you seek your happiness in him will regulate your desires, so that you will be "disposed" to ask only those things which it will be proper for him to grant; and
(b) the fact that you do find your happiness in him will be a reason why he will grant your desires.
4Delight yourself in the LORD;
And He will give you the desires of your heart.
6He will bring forth your righteousness as the light
And your judgment as the noonday.
And your judgment as the noonday.
7Rest in the LORD and wait patiently for Him;
What I get out of this text is completely different than that dating website's interpretation. The while text in context suggests patience and trusting that God has perfect timing. Is it the easy answer most people want? Nope. Is it the easy answer little impatient me wants? Not right now! But I know that if I just wait on my Father in Heaven, that His timing is perfect. And, honestly , I'm willing to wait to experience a "match made in heaven." :)