Can i do not suspect ??

Wanted to move out from this apartment, but im too lazy to search for new room. Everything is ok here, looks like im the only one who is not ok.
A normal condo unit, brother and sister living, there is one vacant room for me.
I donot whether im being too suspicious, i seriously think that something might be abnormal about the brother.
We all know about the ordinary man, 30++ might has a steadily-going relationship, and anytime commit into marriage, and very sociable, with some cash in the bank and look very successful.
Not that my landlord is not successful, he might be as well successful in his style but not knowing to me.
The house is, tidy sometimes and untidy most of the time, even my room itself is tidier then his, when i peeped into his.
I do not know what time he goes to work, but if i come bac in the afternoon, most of the time he will be at home, at first, i thought it was rather normal, but i found out that he actually took a long nap and continue to go to work at about four, and he comes back at seven plus.
I am so curious that what kind of job he is employed with so much of flexibility.
Then after work, he usually does not go out anymore, stay at home, watch tv.
The most important thing is he does not have a girlfriend, i can tell from his style of living, definitely.
The most suspicious issue is, during a very afternoon, i saw a air tix on the table, and i took it up to have a glance, and to my freak amazement, his name is on the tix to bali, with another name. Obviously is going for holiday at the freaking romantic bali right ? Thus, the issue is : the another name is a GUY.
Hence, with all of the evidences i have presented,i have reasonable grounds to believe that he is a .............