I'm looking for two words:
1) when in my mother language we call someone (especially a man), "possessive" or "jealous" (towards his / her spouse), it has a positive connotation and it is a sign of being a real and reliable lover (man or woman). If e.g. a man gets angry when his wife wants to kiss or shake another man's hand warmly (with sexual approach), a real man should be angry because of their possessiveness / jealousy. Actually, these two above-mentioned words (which both have negative connotations) are the only words I found to explain such a sense. I would be really thankful if you let me know whether there is another word to convey a more positive sense.
2) What do the natives call someone who lacks these feelings and it doesn't make any difference for him / her that if their spouse has any type of out of convention / sexual relationship with another opposite sex?