Hast thou, the master mistress of my passion;
A woman's gentle heart, but not acquainted
With shifting change, as is false women's fashion:
An eye more bright than theirs, less false in rolling,
Gilding the object whereupon it gazeth;
A man in hue all hues in his controlling,
Which steals men's eyes and women's souls amazeth.
And for a woman wert thou first created;
Till Nature, as she wrought thee, fell a-doting,
And by addition me of thee defeated,
By adding one thing to my purpose nothing.
But since she prick'd thee out for women's pleasure,
Mine be thy love and thy love's use their treasure.
Since Nature has given the Fair Youth a “prick ” for women’s pleasure, the different love the Bard feels is available to the young man.  Meanwhile women can enjoy his ‘love’s use’; that is his physical body, the “prick” that Nature added. 
 In other words, Shakespeare is drawing a distinction between the physical love between a man and a woman, and his own love. The Bard doesn’t clarify if his feelings are spiritual or physical, but the reader can guess. 
 It is worth adding that, in this as with all the sonnets to the Fair Youth, his spiritual nature isn’t explored, other than an observation that he has a “woman’s gentle heart”.
Sonnet 20