Your friend might find that if her man was born between May 21 and June 20, he's a Gemini. This sign is represented by twins, which some perceive to represent a split personality - often, it brings about a negative connotation. However, the fact of the matter is that Geminis simply tend to be multidimensional and live by this one rule - sometimes, opposites attract.
If her new man seems to flip-flop often on certain matters, it may just be the Gemini traits in him. These individuals can find benefits in opposites, whether they're two different opinions or two T-shirts. Encourage her to stay patient and keep this in mind.
You might also want to encourage her to speak to a psychic who specializes in astrological readings. A phone psychic reading can let her know if her romance is meant to be based on her sign and the sign of her loved one.