Outsiders are not frowned upon however they mostly consider them second class citizens.
As for the women, even the Swiss men complain how “complex” and mysterious they are. In Switzerland, men are valued by their monetary and social rank.
If you’re looking for a same-sex relationship in Zurich, there are websites specifically dedicated to finding you the right partner.
Some of these have fantastic success at matching gay and lesbian couples: gay Parship, is dedicated to finding compatible partners of the same sex and an amazing 38% of premium members report finding the right partner for them!
They appreciate these things but they are expected.