Husbands friendship with woman

???

Ugh, I needs thoughts, ideas, comments or quotes...Have been married 9 months to great guy...but starting in december this woman from his work started calling, often hanging up when i answered. This happened multiple times (isn't *69 a great thing?)...and then once he came home 4 hours later than he predectied and was honest that the WHORE ( thats my affectionate pet name for her) needed to talk about her life (going thru a divorce) and wouldnt let him go as they had gone shopping together. I let it pass. but its been going on and proceeding to her calling frequently to cry on his shoulder, and often i work nights/weekends and when she knows this she often just "pops" over with a movie/CD, usually something romanticish..like Hope floats or something. He doesnt' even tell me that she's been at our house (he knows i dont approve) but there are signs, or ususally my 5year old tells me. What has really set me off is that last weekend when i was at work they went house hunting..but when i asked him about it he lied, and said he went alone ( was suspicious when i saw a box of left overs in his truck and a reciept for 50$ in the check book for a resturant he and i never went to...confronted him later...and he appologized, but dont think he was sorry. He literally said to me that he was with her, but was house hunting for us. He says he doesnt tell me these things because I'll get mad ( geez, what gave that away?). Then to top it off this morning she calls at 6am to tell him the tire on the car is blown and she needs help, she could have waited 2 hours until work started since it was a company care...okay, enough venting. QUESTION: is it unreasonable to say that it's her or me. I want an open communication marriage, but am not comfortable with this friendship ( i do not think he is romantic, but i think the whore is using him as a white knight to lean on in her divorce. And to top it off i'm 6 mo pregnant (planned)...i would push to seperate to get his attn...but not this close to the baby comming....please give me ideas.