Get a lock of his hair and place it inside a small salt circle. Around the parameters of the circle use an essential oil with sensual properties (ylang ylang is a good one) to draw a bigger circle. The idea behind this is that you are creating a circle of protection with the salt and then a circle for the parameters of your magic with the sensual oil. In the centre of the circle, place a small pink candle and a small piece of rose quartz.
Spells tend to be more effective if you use your own wording, but you may choose to speak some words like:
Love is drawn and love defined
With these words, I compel your mind
What once was dormant now must be
I awaken and control your love for me.
Light the candle and visualise how he will be affected by his changing feelings for you. Visualise how this will make you feel. Try to generate a really definite outcome in your mind of how you want this love to materialise and the future you will have together.
When the candle has nearly burned down, use the remnants of the candle wax to bind the lock of hair to the rose quartz. Store safely in case you wish to reverse the spell.
I'm not actually recommending you do this by the way. I'm not a great fan of love spells. But you wanted to know how to do it, what you do with the information is up to you!
Image http://www.sxc.hu/browse.phtml?f=view&id=1413178 (Gioradi)