Duplex purchase but seller will not let me see other side

[Paul Tibok]

Hello BP, new investor here attempting to buy my first investment property.  I have recently looked at half of a duplex (vacant) to owner occupy with my agent and everything seems great except the seller will not allow me to see the other half unless I make an offer and we agree on a price.  There is a tenant in the other side right now and she claims that she does not want to disturb the tenant and only wants serious buyers.  Does this make sense to anyone because it seems absurd to me.  I am not an investor living in another part of the county for example and everyone is well aware of this.  I really like the property and the numbers work for me.  Does anyone have advice? My gut tells me to move on but I really like the place.