He can if he observes her to see if she's showing the early pregnancy signs: nausea and all that. Try googling "signs of pregnancy" and read what comes up. If she's doing some of them she may well be pregnant. Chances are, if she isn't vomiting and tired and eating more often, she isn't pregnant. Sometimes guys can get a gut feeling that their partners are pregnant.
yes
the man
Lesbians cannot have biological babies together, as it requires sperm from a male to fertilize an egg. However, lesbians can have children through various means, such as using assisted reproductive technologies like in-vitro fertilization or through adoption or co-parenting with a male partner.
Break up with him and find a man who wants children.
NO... That's not how you get pregnant.
"Have you talked to your partner about her wanting to have a baby with you?"
No.
yes there is a chance that you can become pregnant from you partner pulling out without a condom
the partner is the boss man and the copartner does what boss man says
no, only males can get pregnant, everyone knows that...
Yes.
If you have had sex then yes you could be pregnant, regardless of whether your partner had had any experience prior to you.