There is definitely no reason to be jealous. The key word is 'past' because it is her past and you are now her future. Now, if it bothers you that your girlfriend could be that promiscuous is understandable. It's truly up to you to figure out how you feel and if you can manage to look past it.
I'm not sure what you are trying to say here, but you could reword it to say "I slept through the morning." or "I slept during the morning." In a literal use of the sentence you give, you would use past.I slept past morning.
You don't do this. Having someone become jealous is a waste of energy and if she is smart she will dump you for talking about your exes. Instead of living in your past start to live for today. What happened in the past should stay there and doesn't belong with a present relationship.
Slept is the past tense and past participle of sleep.
Slept is the past tense and past participle of sleep.
The past tense of sleep is slept. The past participle is also slept.
The past participle is "slept".
sleep/slept/slept
The past participle of "sleep" is "slept."
" to have slept"
From isn't a verb and so doesn't have any tenses. The past participle of slept is slept.
No, "slept" is the past participle of "sleep".
The past tense of "sleep" is "slept."